Askar Chukmaitov - Academia.edu (original) (raw)

Papers by Askar Chukmaitov

Annals of translational medicine, 2015

Few studies have examined the management of comorbidities in cancer patients. This study used pop... more Few studies have examined the management of comorbidities in cancer patients. This study used population-based data to estimate the guideline concordance rates for diabetes management before and after cancer diagnosis and examined if diabetes management services among cancer patients was associated with characteristics of the hospital where the patient was treated. We linked 2005-2009 Medicare claims data to information on 2,707 breast and colorectal cancers patients in state cancer registry files. Multivariate logistic regression models examined hospital characteristics associated with receipt of diabetes management care after cancer diagnosis. The rates of HbAlc testing, LDL-C testing, and retinal eye exam decreased from 72.7%, 79.6%, and 57.9% before cancer diagnosis to 58.3%, 69.5%, and 55.8% after diagnosis. The pre- and post-diagnosis diabetes management care was not significantly different by hospital characteristics in the bivariate analysis except for that the distance betw...

Health care management review

Hospitals have been slow to adopt information technology (IT) largely because of a lack of genera... more Hospitals have been slow to adopt information technology (IT) largely because of a lack of generalizable evidence of the value associated with such adoption. To explore the relationship between IT adoption and quality of care in acute-care hospitals. Primary data on hospital IT adoption were combined with secondary hospital discharge data. Regression analyses were used to examine the relationship between various measures of IT adoption and several quality indicators after controlling for confounders. Adoption of IT was measured using a previously validated method that considers clinical, administrative, and strategic IT capabilities of acute-care hospitals. Quality measures included the Inpatient Quality Indicators developed by the Agency for Healthcare Research and Quality. Data from 98 hospitals were available for analyses. Hospitals adopted an average of 11.3 (45.2%) clinical IT applications, 15.7 (74.8%) administrative IT applications, and 5 (50%) strategic IT applications. In m...

Health policy (Amsterdam, Netherlands), 2014

A historically fragmented U.S. health care system, where care has been delivered by multiple prov... more A historically fragmented U.S. health care system, where care has been delivered by multiple providers with little or no coordination, has led to increasing issues with access, cost, and quality. The Affordable Care Act included provisions to use Medicare, the U.S. near universal public coverage program for older adults, to broadly implement Accountable Care Organization (ACO) models with a triple aim of improving the experience of care, the health of populations, and reducing per capita costs. Private payers in the U.S. are also embracing ACO models. Various European countries are experimenting with similar reforms, particularly those in which coordinated (or integrated) care from a network of providers is reimbursed with bundled payments and/or shared savings. The challenges for these reforms remain formidable and include: (1) overcoming incentives for ACOs to engage in rationing and denial of care and taking on too much financial risk, (2) collecting meaningful data that capture ...

Journal of Ambulatory Care Management, 2012

We studied characteristics of all, occasional, and frequent emergency department (ED) visits due ... more We studied characteristics of all, occasional, and frequent emergency department (ED) visits due to ambulatory care-sensitive conditions (ACSCs). We used a cross-sectional, split-sample design with multivariate logistic regressions using encounter-level, all-payer ED data from all Florida hospitals for the year of 2005. We evaluated associations of key patient characteristics, characteristics of ED utilization, and availability of primary care physicians in the area, with ED visits for ACSCs. We concluded that factors associated with ED use for ACSCs were similar for occasional and frequent ED users. Therefore, universal strategies for reduction of ED overutilization by increasing access to, timeliness, and quality of primary care for all patients likely to experience ACSCs should be used.

Joint Commission journal on quality and patient safety / Joint Commission Resources, 2008

Little is known about quality outcomes in accredited and nonaccredited ambulatory surgical center... more Little is known about quality outcomes in accredited and nonaccredited ambulatory surgical centers (ASCs). Quality outcomes in ASCs accredited by either the Accreditation Association for Ambulatory Health Care (AAAHC) or The Joint Commission were compared with those of nonaccredited ASCs in Florida. Patient-level ambulatory surgery and hospital discharge data from Florida for 2004 were merged and analyzed. Multivariate logistic regressions were estimated separately for the five most common ambulatory surgical procedures: colonoscopy, cataract removal, upper gastroendoscopy, arthroscopy, and prostate biopsy. Statistical models examined differences in risk-adjusted 7-day and 30-day unexpected hospitalizations between nationally accredited and nonaccredited ASCs. In addition to risk adjustment, each model controlled for facility volume of procedure and patient demographic characteristics including gender, race, age, and insurance type. In multivariate analyses that controlled for facil...

The Journal of ambulatory care management

This study explores associations between patient outcomes (7- and 30-day hospitalization and mort... more This study explores associations between patient outcomes (7- and 30-day hospitalization and mortality) and healthcare provider (physician and facility) volumes of outpatient colonoscopy, cataract removal, and upper gastrointestinal endoscopy performed in outpatient surgical settings in Florida. Findings indicate that patients treated by high-volume physicians or facilities had lower adjusted odds ratios for hospitalizations and mortality. When physician and facility volume were assessed simultaneously, physician volume accounted for larger effects than facility volume in hospitalization models. When assessing both physician and facility volume together for mortality, facility volume was a stronger predictor of mortality outcomes at 30 days. Further examinations of associations of outpatient physician and facility volumes and patient outcomes are suggested.

Medical Care, 2007

Previous studies have documented that hospitals decrease costs in response to reimbursement cutba... more Previous studies have documented that hospitals decrease costs in response to reimbursement cutbacks. However, research concerning how this may affect quality of care has produced mixed results. Until recently, the ability to study changes in patient safety and payment has been limited. The objective of the study was to determine whether changes in 4 hospital patient safety indicator (PSI) rates are related to changes in the generosity of payers over time. Study data are drawn from 1995-2000 hospital discharges in 11 states in the Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project State Inpatient Database. Following the same organizations over time, we estimate hospital fixed-effects regression models of the association of payer-specific time and post Balanced Budget Act (BBA) payment changes with risk-adjusted hospital PSI rates controlling for patient, organizational, and market characteristics. Four PSIs relevant to a large number of patients and hospitals that reflect general care processes are studied. The time trend during 1995-2000 is consistently significantly positive for private and Medicare hospital PSI rates. Thus, after controlling for patient characteristics and organizational and market factors, performance worsened. The trend is less consistent for Medicaid and does not exist for self-pay hospital PSI rates. After adjusting for multiple comparisons, we also find that the Medicare trend is fairly consistently higher than that of the other payers. In contrast, there is a less consistent BBA effect, especially for Medicare.

Journal of Surgical Oncology, 2014

A use of polypectomy techniques by endoscopist specialty (primary care, surgery, and gastroentero... more A use of polypectomy techniques by endoscopist specialty (primary care, surgery, and gastroenterology) and experience (volume), and associations with serious gastrointestinal adverse events, were examined. A retrospective follow-up study with ambulatory surgery and hospital discharge datasets from Florida, 1999-2001, was used. Thirty-day hospitalizations due to colonic perforations and gastrointestinal bleeding were investigated for 323,585 patients. Primary care endoscopists and surgeons used hot biopsy forceps/ablation, while gastroenterologists provided snare polypectomy or complex colonoscopy. Low-volume endoscopists were more likely to use simpler rather than complex procedures. For hot forceps/ablation and snare polypectomy, low- and medium-volume endoscopists reported higher odds of adverse events. For complex colonoscopy, higher odds of adverse events were reported for primary care endoscopists (1.74 [95% CI, 1.18-2.56]) relative to gastroenterologists. Endoscopists regardless of specialty and experience can safely use cold biopsy forceps. For hot biopsy and snare polypectomy, low volume, but not specialty, contributed to increased odds of adverse events. For complex colonoscopy, primary care specialty, but not low volume, added to the odds of adverse events. Comparable outcomes were reported for surgeons and gastroenterologists. Cross-training and continuing medical education of primary care endoscopists in high-volume endoscopy settings are recommended for complex colonoscopy procedures.

The Journal of Rural Health, 2009

Purpose: To assess the amount of local rural hospital outpatient department (HOPD) bypass for out... more Purpose: To assess the amount of local rural hospital outpatient department (HOPD) bypass for outpatient procedures. Methods: We analyzed data on colonoscopies and upper gastrointestinal endoscopies performed in the state of Florida over the period 1997-2004. Findings: Approximately, 53% of colonoscopy and 45% of upper gastrointestinal endoscopy patients bypassed their local rural hospital for treatment at either a free-standing ambulatory surgical center (ASC) or a nonlocal hospital outpatient department. Independent predictors of bypass included risk-adjusted severity of the patient's medical condition, insurance status, and race. Patients treated in ASCs were predominately healthier, white and commercially insured. Nonlocal HOPDs tend to treat a sicker cohort of patients who were publicly insured or under managed care. Conclusions: The results indicate that patients who bypass their local HOPD to an ASC differ from those bypassing to a nonlocal HOPD, and that patient factors influencing bypass for outpatient procedures differ from those influencing inpatient bypass. From a policy perspective, as procedures continue to migrate from the inpatient to the outpatient setting, bypassing the local rural hospital for treatment elsewhere could create conditions that negatively impact rural hospital operations.

Journal of Public Health Management and Practice, 2009

The purpose of this study was to assess the alignment of state and local health department financ... more The purpose of this study was to assess the alignment of state and local health department financing with the 10 essential public health service (10EPHS) categories and National Public Health Performance Standards (NPHPS). To determine this, we collected primary data from the Florida Department of Health (FDOH) for fiscal year 2005-2006 and compared it with secondary data collected in the same year through NPHPS survey instruments. A structured interview technique was used to collect primary budget data from each program office at the FDOH and assign each program budget to 10EPHS categories. Local county health department (CHD) expenditures were assessed through an interview with the director and budget chief of one small, medium, and large CHD, and results were then extrapolated for other local CHDs. It was possible for almost 98 percent of the FDOH budget to be allocated into the 10EPHS categories. A majority of resources (68.7%) were used for individual healthcare services, category 7b (assuring provision of services) and category 7a (linking people to needed services). No direct correlation was found between the level of funding by 10EPHS category and the performance standards scores at state or local levels. Public health continues to utilize a majority of its available resources for individual healthcare services, despite increasing requests for improved population-based programs.

International Journal of Public Health, 2008

Objectives: To explore differences in breast cancer knowledge and attitudes toward mammography fo... more Objectives: To explore differences in breast cancer knowledge and attitudes toward mammography for women representing three ethnic groups (Kazakh, Korean, and Russian) and to determine how these factors affect breast cancer preventive practices in Almaty City, Kazakhstan.

Inquiry, 2008

This study assesses the impact of changes in hospitals' financial conditions on changes in hospit... more This study assesses the impact of changes in hospitals' financial conditions on changes in hospitals' staffing decisions. The sample consisted of community hospitals operating between 1995 and 2000. The analysis employed a generalized method of moments (GMM) estimator for its dynamic panel data. Cash flow and patient margin were used to measure financial condition. We estimated the effect of changing financial condition on the number of full-time equivalent personnel (FTEs), registered nurses (RNs), and licensed practical nurses (LPNs) per 1,000 adjusted patient days. Our results suggest that declining financial performance led to cutbacks in LPN FTEs per adjusted patient day, but the effects on total hospital FTEs and RN FTEs were mixed.

Health Services Research, 2007

Research Objective. To compare quality outcomes from surgical procedures performed at freestandin... more Research Objective. To compare quality outcomes from surgical procedures performed at freestanding ambulatory surgery centers (ASCs) and hospital-based outpatient departments (HOPDs). Data Sources. the state of Florida were assembled and analyzed. Study Design. We used a pooled, cross-sectional design. Logistic regressions with time fixed-effects were estimated separately for the 12 most common ambulatory surgical procedures. Our quality outcomes were risk-adjusted 7-day and 30-day mortality and 7-day and 30-day unexpected hospitalizations. Risk-adjustment for patient demographic characteristics and severity of illness were calculated using the DCG/HCC methodology adjusting for primary diagnosis only and separately for all available diagnoses. Principal Findings. Although neither ASCs nor HOPDs performed better overall, we found some difference by procedure that varied based on the risk-adjustment approach used.

Health Care Management Science, 2009

This paper examines the empirical consistency of the Diagnosis Cost Groups/Hierarchical Condition... more This paper examines the empirical consistency of the Diagnosis Cost Groups/Hierarchical Condition Categories (DCG/HCC) risk-adjustment method for comparing 7-day mortality between hospital-based outpatient departments (HOPDs) and freestanding ambulatory surgery centers (ASCs). We used patient level data for the three most common outpatient procedures provided during the 1997-2004 period in Florida. We estimated base-line logistic regression models without any diagnosis-based risk adjustment and compared them to logistic regression models with the DCG/HCC risk-adjustment, and to conditional logit models with a matched cohort risk-adjustment approach. We also evaluated models that adjusted for primary diagnoses only, and then for all available diagnoses, to assess how the frequently absent secondary diagnoses fields in ambulatory surgical data affect risk-adjustment. We found that risk-adjustment using both diagnosis-based methods resulted in similar 7-day mortality estimates for HOPD patients in comparison with ASC patients in two out of three procedures. We conclude that the DCG/HCC risk-adjustment method is relatively consistent and stable, and recommend this risk-adjustment method for health policy research and practice with ambulatory surgery data. We also recommend using risk-adjustment with all available diagnoses.

Health Care Management Science, 2011

In this brief communiction we respond to comments on our earlier publication, which contained som... more In this brief communiction we respond to comments on our earlier publication, which contained some notational errors.

Health Care Management Review, 2007

Numerous studies have examined the relationship between organization characteristics and hospital... more Numerous studies have examined the relationship between organization characteristics and hospital adoption of information technology (IT). However, no known study has examined whether patient characteristics of those treated at a given hospital influences the decision to adopt IT. The present study combines primary and secondary data to examine the effect of payer mix (the combination of payers that make up a given hospital's patient discharges) on IT adoption in hospitals. Survey data from Florida hospitals were combined with the state's hospital discharge database. Multiple regression analyses were used to analyze the data. When examining Medicare, Medicaid, traditional commercial insurance, and managed-care plans, only an increase of managed-care patients, as a percentage of hospital discharges, was associated with a significant increased likelihood to adopt clinical and administrative IT applications by hospitals. Our results suggest that increasing cost pressures associated with managed-care environments are driving hospitals' adoption of clinical and administrative IT systems as such adoption is expected to improve hospital efficiency and lower costs. Given that such cost pressures are also emergent in Medicare, Medicaid, and traditional third-party payment environments, an opportunity exists for these parties to motivate hospital IT adoption as a means for cost reduction.

Gastrointestinal Endoscopy, 2013

Serious GI adverse events in the outpatient setting were examined by polypectomy technique, endos... more Serious GI adverse events in the outpatient setting were examined by polypectomy technique, endoscopist volume, and facility type (ambulatory surgery center and hospital outpatient department). Retrospective follow-up study. Ambulatory surgery and hospital discharge datasets from Florida (1997-2004) were used. A total of 2,315,126 outpatient colonoscopies performed in patients of all ages and payers were examined. Thirty-day hospitalizations because of colonic perforations and GI bleeding, measured as cumulative and specific outcomes, were investigated. Compared with simple colonoscopy, the adjusted risks of cumulative adverse events were greater with the use of cold forceps (1.21 [95% CI, 1.01-1.44]), ablation (3.75 [95% CI, 2.97-4.72]), hot forceps (5.63 [95% CI, 4.97-6.39]), snares (7.75 [95% CI, 6.95-8.64]), or complex colonoscopy (8.83 [95% CI, 7.70-10.12]). Low-volume endoscopists had higher risks of adverse events (1.18 [95% CI, 1.07-1.30]). A higher risk of adverse events was associated with procedures performed in ambulatory surgery centers (1.27 [95% CI, 1.16-1.40]). Important findings were also reported for the analyses stratified by specific outcomes and procedures. The study was constrained by limitations inherent in administrative data pertaining to a single state. As the complexity of polypectomy increases, a higher risk of adverse events is reported. Using lower risk procedures when clinically appropriate or referring patients to high-volume endoscopists can reduce the rates of perforations and GI bleeding. Given the large number of colonoscopies performed in the United States, it is critical that the rates of adverse events be considered when choosing procedures.

American Journal of Medical Quality, 2007

The surgery literature is filled with reports on racial or gender disparities in quality. However... more The surgery literature is filled with reports on racial or gender disparities in quality. However, whether patient demographics are risk factors for complications or death from ambulatory surgical procedures is unknown. This study explores whether racial, age, and gender outcome disparities exist after ambulatory surgeries. Patients studied included adults (>18 years) receiving common ambulatory surgical procedures (N = 3,174,436) in either a freestanding ambulatory surgical center or a hospital-based outpatient department during 1997-2004 in Florida. Results demonstrate that African Americans were at a significantly increased risk for either mortality or unexpected hospitalization in 4 of the 5 procedures examined, even after controlling for confounders. For women, unexpected hospital admission or mortality was less likely to occur after almost all procedures examined. Thus, many of the racial and gender disparities in the inpatient surgical literature are also observed in the ambulatory setting. More research is needed to determine the source of these disparities.

American Journal of Medical Quality, 2013

The study objective was to examine hospital mortality outcomes and structure using 2008 patient-l... more The study objective was to examine hospital mortality outcomes and structure using 2008 patient-level discharges from general community hospitals. Discharges from Florida administrative files were merged to the state mortality registry. A cross-sectional analysis of inpatient mortality was conducted using Inpatient Quality Indicators (IQIs) for acute myocardial infarction (AMI), congestive heart failure (CHF), stroke, pneumonia, and all-payer 30-day postdischarge mortality. Structural characteristics included bed size, volume, ownership, teaching status, and system affiliation. Outcomes were risk adjusted using 3M APR-DRG. Volume was inversely correlated with AMI, CHF, stroke, and 30-day mortality. Similarities and differences in the direction and magnitude of the relationship of structural characteristics to 30-day postdischarge and IQI mortality measures were observed. Hospital volume was inversely correlated with inpatient mortality outcomes. Other hospital characteristics were associated with some mortality outcomes. Further study is needed to understand the relationship between 30-day postdischarge mortality and hospital quality.

Medical Care Research and Review, 2011

The purpose of this study was to examine potential associations among ambulatory surgery centers&... more The purpose of this study was to examine potential associations among ambulatory surgery centers' (ASCs) organizational strategy, structure, and quality performance. The authors obtained several large-scale, all-payer claims data sets for the 1997 to 2004 period. The authors operationalized quality performance as unplanned hospitalizations at 30 days after outpatient arthroscopy and colonoscopy procedures. The authors draw on related organizational theory, behavior, and health services research literatures to develop their conceptual framework and hypotheses and fitted fixed and random effects Poisson regression models with the count of unplanned hospitalizations. Consistent with the key hypotheses formulated, the findings suggest that higher levels of specialization and the volume of procedures may be associated with a decrease in unplanned hospitalizations at ASCs.

Annals of translational medicine, 2015

Few studies have examined the management of comorbidities in cancer patients. This study used pop... more Few studies have examined the management of comorbidities in cancer patients. This study used population-based data to estimate the guideline concordance rates for diabetes management before and after cancer diagnosis and examined if diabetes management services among cancer patients was associated with characteristics of the hospital where the patient was treated. We linked 2005-2009 Medicare claims data to information on 2,707 breast and colorectal cancers patients in state cancer registry files. Multivariate logistic regression models examined hospital characteristics associated with receipt of diabetes management care after cancer diagnosis. The rates of HbAlc testing, LDL-C testing, and retinal eye exam decreased from 72.7%, 79.6%, and 57.9% before cancer diagnosis to 58.3%, 69.5%, and 55.8% after diagnosis. The pre- and post-diagnosis diabetes management care was not significantly different by hospital characteristics in the bivariate analysis except for that the distance betw...

Health care management review

Hospitals have been slow to adopt information technology (IT) largely because of a lack of genera... more Hospitals have been slow to adopt information technology (IT) largely because of a lack of generalizable evidence of the value associated with such adoption. To explore the relationship between IT adoption and quality of care in acute-care hospitals. Primary data on hospital IT adoption were combined with secondary hospital discharge data. Regression analyses were used to examine the relationship between various measures of IT adoption and several quality indicators after controlling for confounders. Adoption of IT was measured using a previously validated method that considers clinical, administrative, and strategic IT capabilities of acute-care hospitals. Quality measures included the Inpatient Quality Indicators developed by the Agency for Healthcare Research and Quality. Data from 98 hospitals were available for analyses. Hospitals adopted an average of 11.3 (45.2%) clinical IT applications, 15.7 (74.8%) administrative IT applications, and 5 (50%) strategic IT applications. In m...

Health policy (Amsterdam, Netherlands), 2014

A historically fragmented U.S. health care system, where care has been delivered by multiple prov... more A historically fragmented U.S. health care system, where care has been delivered by multiple providers with little or no coordination, has led to increasing issues with access, cost, and quality. The Affordable Care Act included provisions to use Medicare, the U.S. near universal public coverage program for older adults, to broadly implement Accountable Care Organization (ACO) models with a triple aim of improving the experience of care, the health of populations, and reducing per capita costs. Private payers in the U.S. are also embracing ACO models. Various European countries are experimenting with similar reforms, particularly those in which coordinated (or integrated) care from a network of providers is reimbursed with bundled payments and/or shared savings. The challenges for these reforms remain formidable and include: (1) overcoming incentives for ACOs to engage in rationing and denial of care and taking on too much financial risk, (2) collecting meaningful data that capture ...

Journal of Ambulatory Care Management, 2012

We studied characteristics of all, occasional, and frequent emergency department (ED) visits due ... more We studied characteristics of all, occasional, and frequent emergency department (ED) visits due to ambulatory care-sensitive conditions (ACSCs). We used a cross-sectional, split-sample design with multivariate logistic regressions using encounter-level, all-payer ED data from all Florida hospitals for the year of 2005. We evaluated associations of key patient characteristics, characteristics of ED utilization, and availability of primary care physicians in the area, with ED visits for ACSCs. We concluded that factors associated with ED use for ACSCs were similar for occasional and frequent ED users. Therefore, universal strategies for reduction of ED overutilization by increasing access to, timeliness, and quality of primary care for all patients likely to experience ACSCs should be used.

Joint Commission journal on quality and patient safety / Joint Commission Resources, 2008

Little is known about quality outcomes in accredited and nonaccredited ambulatory surgical center... more Little is known about quality outcomes in accredited and nonaccredited ambulatory surgical centers (ASCs). Quality outcomes in ASCs accredited by either the Accreditation Association for Ambulatory Health Care (AAAHC) or The Joint Commission were compared with those of nonaccredited ASCs in Florida. Patient-level ambulatory surgery and hospital discharge data from Florida for 2004 were merged and analyzed. Multivariate logistic regressions were estimated separately for the five most common ambulatory surgical procedures: colonoscopy, cataract removal, upper gastroendoscopy, arthroscopy, and prostate biopsy. Statistical models examined differences in risk-adjusted 7-day and 30-day unexpected hospitalizations between nationally accredited and nonaccredited ASCs. In addition to risk adjustment, each model controlled for facility volume of procedure and patient demographic characteristics including gender, race, age, and insurance type. In multivariate analyses that controlled for facil...

The Journal of ambulatory care management

This study explores associations between patient outcomes (7- and 30-day hospitalization and mort... more This study explores associations between patient outcomes (7- and 30-day hospitalization and mortality) and healthcare provider (physician and facility) volumes of outpatient colonoscopy, cataract removal, and upper gastrointestinal endoscopy performed in outpatient surgical settings in Florida. Findings indicate that patients treated by high-volume physicians or facilities had lower adjusted odds ratios for hospitalizations and mortality. When physician and facility volume were assessed simultaneously, physician volume accounted for larger effects than facility volume in hospitalization models. When assessing both physician and facility volume together for mortality, facility volume was a stronger predictor of mortality outcomes at 30 days. Further examinations of associations of outpatient physician and facility volumes and patient outcomes are suggested.

Medical Care, 2007

Previous studies have documented that hospitals decrease costs in response to reimbursement cutba... more Previous studies have documented that hospitals decrease costs in response to reimbursement cutbacks. However, research concerning how this may affect quality of care has produced mixed results. Until recently, the ability to study changes in patient safety and payment has been limited. The objective of the study was to determine whether changes in 4 hospital patient safety indicator (PSI) rates are related to changes in the generosity of payers over time. Study data are drawn from 1995-2000 hospital discharges in 11 states in the Agency for Healthcare Research and Quality Healthcare Cost and Utilization Project State Inpatient Database. Following the same organizations over time, we estimate hospital fixed-effects regression models of the association of payer-specific time and post Balanced Budget Act (BBA) payment changes with risk-adjusted hospital PSI rates controlling for patient, organizational, and market characteristics. Four PSIs relevant to a large number of patients and hospitals that reflect general care processes are studied. The time trend during 1995-2000 is consistently significantly positive for private and Medicare hospital PSI rates. Thus, after controlling for patient characteristics and organizational and market factors, performance worsened. The trend is less consistent for Medicaid and does not exist for self-pay hospital PSI rates. After adjusting for multiple comparisons, we also find that the Medicare trend is fairly consistently higher than that of the other payers. In contrast, there is a less consistent BBA effect, especially for Medicare.

Journal of Surgical Oncology, 2014

A use of polypectomy techniques by endoscopist specialty (primary care, surgery, and gastroentero... more A use of polypectomy techniques by endoscopist specialty (primary care, surgery, and gastroenterology) and experience (volume), and associations with serious gastrointestinal adverse events, were examined. A retrospective follow-up study with ambulatory surgery and hospital discharge datasets from Florida, 1999-2001, was used. Thirty-day hospitalizations due to colonic perforations and gastrointestinal bleeding were investigated for 323,585 patients. Primary care endoscopists and surgeons used hot biopsy forceps/ablation, while gastroenterologists provided snare polypectomy or complex colonoscopy. Low-volume endoscopists were more likely to use simpler rather than complex procedures. For hot forceps/ablation and snare polypectomy, low- and medium-volume endoscopists reported higher odds of adverse events. For complex colonoscopy, higher odds of adverse events were reported for primary care endoscopists (1.74 [95% CI, 1.18-2.56]) relative to gastroenterologists. Endoscopists regardless of specialty and experience can safely use cold biopsy forceps. For hot biopsy and snare polypectomy, low volume, but not specialty, contributed to increased odds of adverse events. For complex colonoscopy, primary care specialty, but not low volume, added to the odds of adverse events. Comparable outcomes were reported for surgeons and gastroenterologists. Cross-training and continuing medical education of primary care endoscopists in high-volume endoscopy settings are recommended for complex colonoscopy procedures.

The Journal of Rural Health, 2009

Purpose: To assess the amount of local rural hospital outpatient department (HOPD) bypass for out... more Purpose: To assess the amount of local rural hospital outpatient department (HOPD) bypass for outpatient procedures. Methods: We analyzed data on colonoscopies and upper gastrointestinal endoscopies performed in the state of Florida over the period 1997-2004. Findings: Approximately, 53% of colonoscopy and 45% of upper gastrointestinal endoscopy patients bypassed their local rural hospital for treatment at either a free-standing ambulatory surgical center (ASC) or a nonlocal hospital outpatient department. Independent predictors of bypass included risk-adjusted severity of the patient's medical condition, insurance status, and race. Patients treated in ASCs were predominately healthier, white and commercially insured. Nonlocal HOPDs tend to treat a sicker cohort of patients who were publicly insured or under managed care. Conclusions: The results indicate that patients who bypass their local HOPD to an ASC differ from those bypassing to a nonlocal HOPD, and that patient factors influencing bypass for outpatient procedures differ from those influencing inpatient bypass. From a policy perspective, as procedures continue to migrate from the inpatient to the outpatient setting, bypassing the local rural hospital for treatment elsewhere could create conditions that negatively impact rural hospital operations.

Journal of Public Health Management and Practice, 2009

The purpose of this study was to assess the alignment of state and local health department financ... more The purpose of this study was to assess the alignment of state and local health department financing with the 10 essential public health service (10EPHS) categories and National Public Health Performance Standards (NPHPS). To determine this, we collected primary data from the Florida Department of Health (FDOH) for fiscal year 2005-2006 and compared it with secondary data collected in the same year through NPHPS survey instruments. A structured interview technique was used to collect primary budget data from each program office at the FDOH and assign each program budget to 10EPHS categories. Local county health department (CHD) expenditures were assessed through an interview with the director and budget chief of one small, medium, and large CHD, and results were then extrapolated for other local CHDs. It was possible for almost 98 percent of the FDOH budget to be allocated into the 10EPHS categories. A majority of resources (68.7%) were used for individual healthcare services, category 7b (assuring provision of services) and category 7a (linking people to needed services). No direct correlation was found between the level of funding by 10EPHS category and the performance standards scores at state or local levels. Public health continues to utilize a majority of its available resources for individual healthcare services, despite increasing requests for improved population-based programs.

International Journal of Public Health, 2008

Objectives: To explore differences in breast cancer knowledge and attitudes toward mammography fo... more Objectives: To explore differences in breast cancer knowledge and attitudes toward mammography for women representing three ethnic groups (Kazakh, Korean, and Russian) and to determine how these factors affect breast cancer preventive practices in Almaty City, Kazakhstan.

Inquiry, 2008

This study assesses the impact of changes in hospitals' financial conditions on changes in hospit... more This study assesses the impact of changes in hospitals' financial conditions on changes in hospitals' staffing decisions. The sample consisted of community hospitals operating between 1995 and 2000. The analysis employed a generalized method of moments (GMM) estimator for its dynamic panel data. Cash flow and patient margin were used to measure financial condition. We estimated the effect of changing financial condition on the number of full-time equivalent personnel (FTEs), registered nurses (RNs), and licensed practical nurses (LPNs) per 1,000 adjusted patient days. Our results suggest that declining financial performance led to cutbacks in LPN FTEs per adjusted patient day, but the effects on total hospital FTEs and RN FTEs were mixed.

Health Services Research, 2007

Research Objective. To compare quality outcomes from surgical procedures performed at freestandin... more Research Objective. To compare quality outcomes from surgical procedures performed at freestanding ambulatory surgery centers (ASCs) and hospital-based outpatient departments (HOPDs). Data Sources. the state of Florida were assembled and analyzed. Study Design. We used a pooled, cross-sectional design. Logistic regressions with time fixed-effects were estimated separately for the 12 most common ambulatory surgical procedures. Our quality outcomes were risk-adjusted 7-day and 30-day mortality and 7-day and 30-day unexpected hospitalizations. Risk-adjustment for patient demographic characteristics and severity of illness were calculated using the DCG/HCC methodology adjusting for primary diagnosis only and separately for all available diagnoses. Principal Findings. Although neither ASCs nor HOPDs performed better overall, we found some difference by procedure that varied based on the risk-adjustment approach used.

Health Care Management Science, 2009

This paper examines the empirical consistency of the Diagnosis Cost Groups/Hierarchical Condition... more This paper examines the empirical consistency of the Diagnosis Cost Groups/Hierarchical Condition Categories (DCG/HCC) risk-adjustment method for comparing 7-day mortality between hospital-based outpatient departments (HOPDs) and freestanding ambulatory surgery centers (ASCs). We used patient level data for the three most common outpatient procedures provided during the 1997-2004 period in Florida. We estimated base-line logistic regression models without any diagnosis-based risk adjustment and compared them to logistic regression models with the DCG/HCC risk-adjustment, and to conditional logit models with a matched cohort risk-adjustment approach. We also evaluated models that adjusted for primary diagnoses only, and then for all available diagnoses, to assess how the frequently absent secondary diagnoses fields in ambulatory surgical data affect risk-adjustment. We found that risk-adjustment using both diagnosis-based methods resulted in similar 7-day mortality estimates for HOPD patients in comparison with ASC patients in two out of three procedures. We conclude that the DCG/HCC risk-adjustment method is relatively consistent and stable, and recommend this risk-adjustment method for health policy research and practice with ambulatory surgery data. We also recommend using risk-adjustment with all available diagnoses.

Health Care Management Science, 2011

In this brief communiction we respond to comments on our earlier publication, which contained som... more In this brief communiction we respond to comments on our earlier publication, which contained some notational errors.

Health Care Management Review, 2007

Numerous studies have examined the relationship between organization characteristics and hospital... more Numerous studies have examined the relationship between organization characteristics and hospital adoption of information technology (IT). However, no known study has examined whether patient characteristics of those treated at a given hospital influences the decision to adopt IT. The present study combines primary and secondary data to examine the effect of payer mix (the combination of payers that make up a given hospital's patient discharges) on IT adoption in hospitals. Survey data from Florida hospitals were combined with the state's hospital discharge database. Multiple regression analyses were used to analyze the data. When examining Medicare, Medicaid, traditional commercial insurance, and managed-care plans, only an increase of managed-care patients, as a percentage of hospital discharges, was associated with a significant increased likelihood to adopt clinical and administrative IT applications by hospitals. Our results suggest that increasing cost pressures associated with managed-care environments are driving hospitals' adoption of clinical and administrative IT systems as such adoption is expected to improve hospital efficiency and lower costs. Given that such cost pressures are also emergent in Medicare, Medicaid, and traditional third-party payment environments, an opportunity exists for these parties to motivate hospital IT adoption as a means for cost reduction.

Gastrointestinal Endoscopy, 2013

Serious GI adverse events in the outpatient setting were examined by polypectomy technique, endos... more Serious GI adverse events in the outpatient setting were examined by polypectomy technique, endoscopist volume, and facility type (ambulatory surgery center and hospital outpatient department). Retrospective follow-up study. Ambulatory surgery and hospital discharge datasets from Florida (1997-2004) were used. A total of 2,315,126 outpatient colonoscopies performed in patients of all ages and payers were examined. Thirty-day hospitalizations because of colonic perforations and GI bleeding, measured as cumulative and specific outcomes, were investigated. Compared with simple colonoscopy, the adjusted risks of cumulative adverse events were greater with the use of cold forceps (1.21 [95% CI, 1.01-1.44]), ablation (3.75 [95% CI, 2.97-4.72]), hot forceps (5.63 [95% CI, 4.97-6.39]), snares (7.75 [95% CI, 6.95-8.64]), or complex colonoscopy (8.83 [95% CI, 7.70-10.12]). Low-volume endoscopists had higher risks of adverse events (1.18 [95% CI, 1.07-1.30]). A higher risk of adverse events was associated with procedures performed in ambulatory surgery centers (1.27 [95% CI, 1.16-1.40]). Important findings were also reported for the analyses stratified by specific outcomes and procedures. The study was constrained by limitations inherent in administrative data pertaining to a single state. As the complexity of polypectomy increases, a higher risk of adverse events is reported. Using lower risk procedures when clinically appropriate or referring patients to high-volume endoscopists can reduce the rates of perforations and GI bleeding. Given the large number of colonoscopies performed in the United States, it is critical that the rates of adverse events be considered when choosing procedures.

American Journal of Medical Quality, 2007

The surgery literature is filled with reports on racial or gender disparities in quality. However... more The surgery literature is filled with reports on racial or gender disparities in quality. However, whether patient demographics are risk factors for complications or death from ambulatory surgical procedures is unknown. This study explores whether racial, age, and gender outcome disparities exist after ambulatory surgeries. Patients studied included adults (>18 years) receiving common ambulatory surgical procedures (N = 3,174,436) in either a freestanding ambulatory surgical center or a hospital-based outpatient department during 1997-2004 in Florida. Results demonstrate that African Americans were at a significantly increased risk for either mortality or unexpected hospitalization in 4 of the 5 procedures examined, even after controlling for confounders. For women, unexpected hospital admission or mortality was less likely to occur after almost all procedures examined. Thus, many of the racial and gender disparities in the inpatient surgical literature are also observed in the ambulatory setting. More research is needed to determine the source of these disparities.

American Journal of Medical Quality, 2013

The study objective was to examine hospital mortality outcomes and structure using 2008 patient-l... more The study objective was to examine hospital mortality outcomes and structure using 2008 patient-level discharges from general community hospitals. Discharges from Florida administrative files were merged to the state mortality registry. A cross-sectional analysis of inpatient mortality was conducted using Inpatient Quality Indicators (IQIs) for acute myocardial infarction (AMI), congestive heart failure (CHF), stroke, pneumonia, and all-payer 30-day postdischarge mortality. Structural characteristics included bed size, volume, ownership, teaching status, and system affiliation. Outcomes were risk adjusted using 3M APR-DRG. Volume was inversely correlated with AMI, CHF, stroke, and 30-day mortality. Similarities and differences in the direction and magnitude of the relationship of structural characteristics to 30-day postdischarge and IQI mortality measures were observed. Hospital volume was inversely correlated with inpatient mortality outcomes. Other hospital characteristics were associated with some mortality outcomes. Further study is needed to understand the relationship between 30-day postdischarge mortality and hospital quality.

Medical Care Research and Review, 2011

The purpose of this study was to examine potential associations among ambulatory surgery centers&... more The purpose of this study was to examine potential associations among ambulatory surgery centers' (ASCs) organizational strategy, structure, and quality performance. The authors obtained several large-scale, all-payer claims data sets for the 1997 to 2004 period. The authors operationalized quality performance as unplanned hospitalizations at 30 days after outpatient arthroscopy and colonoscopy procedures. The authors draw on related organizational theory, behavior, and health services research literatures to develop their conceptual framework and hypotheses and fitted fixed and random effects Poisson regression models with the count of unplanned hospitalizations. Consistent with the key hypotheses formulated, the findings suggest that higher levels of specialization and the volume of procedures may be associated with a decrease in unplanned hospitalizations at ASCs.