Erik Hendriks - Academia.edu (original) (raw)

Papers by Erik Hendriks

Objective. To evaluate measurement properties of a set of public quality indicators on physical t... more Objective. To evaluate measurement properties of a set of public quality indicators on physical therapy.
Design. An observational study with web-based collected survey data (2009 and 2010).
Setting. Dutch primary care physical therapy practices.
Participants. In 3743 physical therapy practices, 11 274 physical therapists reporting on 30 patients each.
Main Outcome Measure(s). Eight quality indicators were constructed: screening and diagnostics (n = 2), setting target aim and
subsequent of intervention (n = 2), administrating results (n = 1), global outcome measures (n = 2) and patient’s treatment agreement
(n = 1). Measurement properties on content and construct validity, reproducibility, floor and ceiling effects and interpretability
of the indicators were assessed using comparative statistics and multilevel modeling.
Results. Content validity was acceptable. Construct validity (using known group techniques) of two outcome indicators was acceptable;
hypotheses on age, gender and chronic vs. acute care were confirmed. For the whole set of indicators reproducibility
was approximated by correlation of 2009 and 2010 data and rated moderately positive (Spearman’s ρ between 0.3 and 0.42 at
practice level) and interpretability as acceptable, as distinguishing between patient groups was possible. Ceiling effects were
assessed negative as they were high to extremely high (30% for outcome indicator 6–95% for administrating results).
Conclusion. Weaknesses in data collection should be dealt with to reduce bias and to reduce ceiling effects by randomly extracting
data from electronic medical records. More specificity of the indicators seems to be needed, and can be reached by focusing
on most prevalent conditions, thus increasing usability of the indicators to improve quality of care.
Keywords: quality indicators, physical therapy, measurement properties, measurement of quality

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cirrie.buffalo.edu

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Evidence-Based Physical Therapy for the Pelvic Floor, 2007

409 Chapter 16 The development of clinical practice guidelines in physical therapy Bary Berghmans... more 409 Chapter 16 The development of clinical practice guidelines in physical therapy Bary Berghmans, Erik Hendriks, Nol Bernards and Rob de Bie CHAPTER CONTENTS Introduction 409 Guiding principles in the development of CPGs 410 The development of CPGs 410 ...

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Reviews, 1996

Osteoarthritis is the most common form of joint disease and the leading cause of pain and physica... more Osteoarthritis is the most common form of joint disease and the leading cause of pain and physical disability in the elderly. Transcutaneous electrical nerve stimulation (TENS), interferential current stimulation and pulsed electrostimulation are used widely to control both acute and chronic pain arising from several conditions, but some policy makers regard efficacy evidence as insufficient. To compare transcutaneous electrostimulation with sham or no specific intervention in terms of effects on pain and withdrawals due to adverse events in patients with knee osteoarthritis. We updated the search in CENTRAL, MEDLINE, EMBASE, CINAHL and PEDro up to 5 August 2008, checked conference proceedings and reference lists, and contacted authors. Randomised or quasi-randomised controlled trials that compared transcutaneously applied electrostimulation with a sham intervention or no intervention in patients with osteoarthritis of the knee. We extracted data using standardised forms and contacted investigators to obtain missing outcome information. Main outcomes were pain and withdrawals or dropouts due to adverse events. We calculated standardised mean differences (SMDs) for pain and relative risks for safety outcomes and used inverse-variance random-effects meta-analysis. The analysis of pain was based on predicted estimates from meta-regression using the standard error as explanatory variable. In this update we identified 14 additional trials resulting in the inclusion of 18 small trials in 813 patients. Eleven trials used TENS, four interferential current stimulation, one both TENS and interferential current stimulation, and two pulsed electrostimulation. The methodological quality and the quality of reporting was poor and a high degree of heterogeneity among the trials (I(2) = 80%) was revealed. The funnel plot for pain was asymmetrical (P &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt; 0.001). The predicted SMD of pain intensity in trials as large as the largest trial was -0.07 (95% CI -0.46 to 0.32), corresponding to a difference in pain scores between electrostimulation and control of 0.2 cm on a 10 cm visual analogue scale. There was little evidence that SMDs differed on the type of electrostimulation (P = 0.94). The relative risk of being withdrawn or dropping out due to adverse events was 0.97 (95% CI 0.2 to 6.0). In this update, we could not confirm that transcutaneous electrostimulation is effective for pain relief. The current systematic review is inconclusive, hampered by the inclusion of only small trials of questionable quality. Appropriately designed trials of adequate power are warranted.

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Australian Journal of Physiotherapy, 2008

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Antecedentes La osteoartritis es la modalidad más frecuente de arteriopatías y la principal causa... more Antecedentes La osteoartritis es la modalidad más frecuente de arteriopatías y la principal causa de dolor y discapacidad física en los ancianos. La neuroestimulación eléctrica transcutánea (TENS), la estimulación con corriente interferencial y la electroestimulación con pulsos se utilizan ampliamente para controlar tanto el dolor agudo como crónico producido por diferentes enfermedades, aunque algunos elaboradores de políticas consideran que las pruebas sobre la eficacia son insuficientes.

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Proceedings of the 16th international conference on Supercomputing - ICS '02, 2002

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ACM SIGOPS Operating Systems Review, 2006

DOE has put forth a considerable e! ort into light-weight kernels for high performance computing,... more DOE has put forth a considerable e! ort into light-weight kernels for high performance computing, yet there has been a lack of acceptance and use, perhaps due to the limited sup- port for hardware and software. The arguments for light- weight kernels have been based on the problem of interfer- ence, i.e. changes in application performance that occur when the

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The Journal of Supercomputing, 2006

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Page 1. Fast Mapping on Myrinet Networks Erik A. Hendriks Advanced Computing Laboratory Los Alamo... more Page 1. Fast Mapping on Myrinet Networks Erik A. Hendriks Advanced Computing Laboratory Los Alamos National Laboratory ∗ hendriks@lanl.gov Abstract This paper presents an alternate method for discov-ering new switches ...

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