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Papers by Stella Settumba
BMC Health Services Research, 2014
Background: Discrete choice experiments (DCEs) are attribute-driven experimental techniques used ... more Background: Discrete choice experiments (DCEs) are attribute-driven experimental techniques used to elicit stakeholders' preferences to support the design and implementation of policy interventions. The validity of a DCE, therefore, depends on the appropriate specification of the attributes and their levels. There have been recent calls for greater rigor in implementing and reporting on the processes of developing attributes and attribute-levels for discrete choice experiments (DCEs). This paper responds to such calls by carefully reporting a systematic process of developing micro health insurance attributes and attribute-levels for the design of a DCE in rural Malawi. Methods: Conceptual attributes and attribute-levels were initially derived from a literature review which informed the design of qualitative data collection tools to identify context specific attributes and attribute-levels. Qualitative data was collected in August-September 2012 from 12 focus group discussions with community residents and 8 in-depth interviews with health workers. All participants were selected according to stratified purposive sampling. The material was tape-recorded, fully transcribed, and coded by three researchers to identify context-specific attributes and attribute-levels. Expert opinion was used to scale down the attributes and levels. A pilot study confirmed the appropriateness of the selected attributes and levels for a DCE. Results: First, a consensus, emerging from an individual level analysis of the qualitative transcripts, identified 10 candidate attributes. Levels were assigned to all attributes based on data from transcripts and knowledge of the Malawian context, derived from literature. Second, through further discussions with experts, four attributes were discarded based on multiple criteria. The 6 remaining attributes were: premium level, unit of enrollment, management structure, health service benefit package, transportation coverage and copayment levels. A final step of revision and piloting confirmed that the retained attributes satisfied the credibility criteria of DCE attributes. Conclusion: This detailed description makes our attribute development process transparent, and provides the reader with a basis to assess the rigor of this stage of constructing the DCE. This paper contributes empirical evidence to the limited methodological literature on attributes and levels development for DCE, thereby providing further empirical guidance on the matter, specifically within rural communities of low-and middle-income countries.
World Scientific series in global healthcare economics and public policy, May 27, 2020
Drug and Alcohol Review, Dec 11, 2022
African Journal of AIDS Research, 2019
Explore facility-level average costs per client of HIV testing and counselling (HTC) and voluntar... more Explore facility-level average costs per client of HIV testing and counselling (HTC) and voluntary medical male circumcision (VMMC) services in 13 countries. Methods: Through a literature search we identified studies that reported facility-level costs of HTC or VMMC programmes. We requested the primary data from authors and standardised the disparate data sources to make them comparable. We then conducted descriptive statistics and a meta-analysis to assess the cost variation among facilities. All costs were converted to 2017 US dollars ($). Results: We gathered data from 14 studies across 13 countries and 772 facilities (552 HTC, 220 VMMC). The weighted average unit cost per client served was 15(9515 (95% CI 12, 18) for HTC and 15(9559 (95% CI 45, 74) for VMMC. On average, 38% of the mean unit cost for HTC corresponded to recurrent costs, 56% to personnel costs, and 6% to capital costs. For VMMC, 41% of the average unit cost corresponded to recurrent costs, 55% to personnel costs, and 4% to capital costs. We observed unit cost variation within and between countries, and lower costs in higher scale categories in all interventions.
Applied Health Economics and Health Policy, Oct 13, 2018
Background The contingent valuation (CV) method is an alternative approach to typical health econ... more Background The contingent valuation (CV) method is an alternative approach to typical health economic methods for valuing interventions that have both health and non-health outcomes. Fertility treatment, such as in vitro fertilisation (IVF), fall into this category because of the significant non-health outcomes associated with having children. Aim To estimate the general population's willingness to pay (WTP) for one cycle of IVF and one year of IVF treatment, and to test the reliability and validity of a CV instrument. Methods Three online CV surveys were administered to a total of 1870 participants from the Australian general population using an ex-post perspective, that is, they assumed they were infertile and needed IVF to conceive a child.
DOAJ (DOAJ: Directory of Open Access Journals), 2021
Background: Early treatment (considered as early contact with community mental health services) a... more Background: Early treatment (considered as early contact with community mental health services) and treatment retention are associated with reduced reoffending among those with a previous diagnosis of psychosis, yet the attributes of care required to best achieve this is largely unexplored for people with psychosis leaving prison. This study sought consensus from a sample of experts and consumers regarding the attributes of an "optimal model of care" for those with a prior episode of psychosis leaving prison in New South Wales, Australia. Methods: A Delphi method was used, which involved establishing a consensus from a panel of 25 experts and consumers. Following three meetings, 34 model of care attributes and 168 attribute levels were generated for two rounds of online scoring. All attributes and levels were included in the final model if they scored "very important" or "extremely important;" or if the attribute was agreed on by 70% or more of participants. The participant retention rate across scoring rounds was 96% for Round 1 and 84% for Round 2, where consensus was reached. Two "member checking" procedures were undertaken to enhance the integrity of findings: a model "stress test" and an online consumer poll. Results: Thirty-two attributes and 72 attribute levels were included in the final model across four components: pre-release care planning and coordination; treatments in community; diversion from prison; and evaluation. Member checking endorsed a person-centered approach with carers and peer-support central to care. Conclusions: Participants agreed that an optimal model of care should involve a specialized team who works independent of community health service teams to directly deliver certain treatments and services while helping consumers to access external social an economic supports and services.
Neurology, Jun 8, 2020
Objective To quantify the economic and health-related quality of life (HRQoL) burden incurred by ... more Objective To quantify the economic and health-related quality of life (HRQoL) burden incurred by households with a child affected by spinal muscular atrophy (SMA). Methods Hospital records, insurance claims, and detailed resource use questionnaires completed by caregivers were used to capture the direct and indirect costs to households of 40 children affected by SMA I, II, and III in Australia between 2016 and 2017. Prevalence costing methods were used and reported in 2017 US dollar (USD) purchasing power parity (PPP). The HRQoL for patients and primary caregivers was quantified with the youth version of the EQ-5D and CareQoL multiattribute utility instruments and Australian utility weights. Results The average total annual cost of SMA per household was $143,705 USD PPP for all SMA types
American Journal of Criminal Justice, Aug 4, 2017
Public expenditure on the criminal justice system represents a significant fiscal burden to gover... more Public expenditure on the criminal justice system represents a significant fiscal burden to government worldwide, making the economic evaluation of interventions aimed at improving justice outcomes critical to informing resource allocation. This study systematically reviews and assesses the scope and quality of economic evaluations of behavioral interventions aimed at reducing reoffending. Only seventeen studies met the inclusion criteria, with wide variation in methodological approaches,
PLOS ONE, 2018
¶ inSCALE Study Group: Membership of the inSCALE study group is provided in the Acknowledgments *
Health Policy and Planning, 2015
Community health worker (CHW) programmes are currently being scaled-up in sub-Saharan Africa to i... more Community health worker (CHW) programmes are currently being scaled-up in sub-Saharan Africa to improve access to healthcare. CHWs are often volunteers; from an economic perspective, this raises considerations whether reliance on an unpaid workforce is sustainable and how to appropriately cost and value the work of CHWs. Both these questions can be informed by an understanding of CHWs' workload, their opportunity costs of time and the perceived benefits of being a CHW. However, to date few studies have fully explored the methodological challenges in valuing CHW time. We examined the costs and benefits of volunteering in a sample of 45 CHWs providing integrated community case management of common childhood illnesses in rural Uganda in February 2012 using different methods. We assessed the value of CHW time using the minimum public sector salary rate and a CHW-elicited replacement wage, as well as the opportunity cost of time based on CHW-estimated annual income and alternative work opportunities, respectively. Reported monthly CHW workload, a median of 19.3 h (range 2.5-57), was valued at USD 6.9 (range 0.9-20.4) per month from the perspective of the healthcare system (applicable replacement wage) and at a median of USD 4.1 (range 0.4-169) from the perspective of the CHWs (individual opportunity cost of time). In a discrete choice experiment on preferred work characteristics, remuneration and community appreciation dominated. We find that volunteering CHWs value the opportunity to make a social contribution, but the decision to volunteer is also influenced by anticipated future rewards. Care must be taken by those costing and designing CHW programmes to acknowledge the opportunity cost of CHWs at the margin and over the long term. Failure to properly consider these issues may lead to cost estimations below the amount necessary to scale up and sustain programmes.
Tropical Medicine & International Health, 2015
objective To explore the chronic disease services in Uganda: their level of utilisation, the tota... more objective To explore the chronic disease services in Uganda: their level of utilisation, the total service costs and unit costs per visit. methods Full financial and economic cost data were collected from 12 facilities in two districts, from the provider's perspective. A combination of ingredients-based and step-down allocation costing approaches was used. The diseases under study were diabetes, hypertension, chronic obstructive pulmonary disease (COPD), epilepsy and HIV infection. Data were collected through a review of facility records, direct observation and structured interviews with health workers. results Provision of chronic care services was concentrated at higher-level facilities. Excluding drugs, the total costs for NCD care fell below 2% of total facility costs. Unit costs per visit varied widely, both across different levels of the health system, and between facilities of the same level. This variability was driven by differences in clinical and drug prescribing practices. conclusion Most patients reported directly to higher-level facilities, bypassing nearby peripheral facilities. NCD services in Uganda are underfunded particularly at peripheral facilities. There is a need to estimate the budget impact of improving NCD care and to standardise treatment guidelines. keywords non-communicable diseases, human immunodeficiency virus, cost, low-and middleincome countries, Uganda, health systems
BMC Health Services Research, 2014
Background: Discrete choice experiments (DCEs) are attribute-driven experimental techniques used ... more Background: Discrete choice experiments (DCEs) are attribute-driven experimental techniques used to elicit stakeholders' preferences to support the design and implementation of policy interventions. The validity of a DCE, therefore, depends on the appropriate specification of the attributes and their levels. There have been recent calls for greater rigor in implementing and reporting on the processes of developing attributes and attribute-levels for discrete choice experiments (DCEs). This paper responds to such calls by carefully reporting a systematic process of developing micro health insurance attributes and attribute-levels for the design of a DCE in rural Malawi. Methods: Conceptual attributes and attribute-levels were initially derived from a literature review which informed the design of qualitative data collection tools to identify context specific attributes and attribute-levels. Qualitative data was collected in August-September 2012 from 12 focus group discussions with community residents and 8 in-depth interviews with health workers. All participants were selected according to stratified purposive sampling. The material was tape-recorded, fully transcribed, and coded by three researchers to identify context-specific attributes and attribute-levels. Expert opinion was used to scale down the attributes and levels. A pilot study confirmed the appropriateness of the selected attributes and levels for a DCE. Results: First, a consensus, emerging from an individual level analysis of the qualitative transcripts, identified 10 candidate attributes. Levels were assigned to all attributes based on data from transcripts and knowledge of the Malawian context, derived from literature. Second, through further discussions with experts, four attributes were discarded based on multiple criteria. The 6 remaining attributes were: premium level, unit of enrollment, management structure, health service benefit package, transportation coverage and copayment levels. A final step of revision and piloting confirmed that the retained attributes satisfied the credibility criteria of DCE attributes. Conclusion: This detailed description makes our attribute development process transparent, and provides the reader with a basis to assess the rigor of this stage of constructing the DCE. This paper contributes empirical evidence to the limited methodological literature on attributes and levels development for DCE, thereby providing further empirical guidance on the matter, specifically within rural communities of low-and middle-income countries.
World Scientific series in global healthcare economics and public policy, May 27, 2020
Drug and Alcohol Review, Dec 11, 2022
African Journal of AIDS Research, 2019
Explore facility-level average costs per client of HIV testing and counselling (HTC) and voluntar... more Explore facility-level average costs per client of HIV testing and counselling (HTC) and voluntary medical male circumcision (VMMC) services in 13 countries. Methods: Through a literature search we identified studies that reported facility-level costs of HTC or VMMC programmes. We requested the primary data from authors and standardised the disparate data sources to make them comparable. We then conducted descriptive statistics and a meta-analysis to assess the cost variation among facilities. All costs were converted to 2017 US dollars ($). Results: We gathered data from 14 studies across 13 countries and 772 facilities (552 HTC, 220 VMMC). The weighted average unit cost per client served was 15(9515 (95% CI 12, 18) for HTC and 15(9559 (95% CI 45, 74) for VMMC. On average, 38% of the mean unit cost for HTC corresponded to recurrent costs, 56% to personnel costs, and 6% to capital costs. For VMMC, 41% of the average unit cost corresponded to recurrent costs, 55% to personnel costs, and 4% to capital costs. We observed unit cost variation within and between countries, and lower costs in higher scale categories in all interventions.
Applied Health Economics and Health Policy, Oct 13, 2018
Background The contingent valuation (CV) method is an alternative approach to typical health econ... more Background The contingent valuation (CV) method is an alternative approach to typical health economic methods for valuing interventions that have both health and non-health outcomes. Fertility treatment, such as in vitro fertilisation (IVF), fall into this category because of the significant non-health outcomes associated with having children. Aim To estimate the general population's willingness to pay (WTP) for one cycle of IVF and one year of IVF treatment, and to test the reliability and validity of a CV instrument. Methods Three online CV surveys were administered to a total of 1870 participants from the Australian general population using an ex-post perspective, that is, they assumed they were infertile and needed IVF to conceive a child.
DOAJ (DOAJ: Directory of Open Access Journals), 2021
Background: Early treatment (considered as early contact with community mental health services) a... more Background: Early treatment (considered as early contact with community mental health services) and treatment retention are associated with reduced reoffending among those with a previous diagnosis of psychosis, yet the attributes of care required to best achieve this is largely unexplored for people with psychosis leaving prison. This study sought consensus from a sample of experts and consumers regarding the attributes of an "optimal model of care" for those with a prior episode of psychosis leaving prison in New South Wales, Australia. Methods: A Delphi method was used, which involved establishing a consensus from a panel of 25 experts and consumers. Following three meetings, 34 model of care attributes and 168 attribute levels were generated for two rounds of online scoring. All attributes and levels were included in the final model if they scored "very important" or "extremely important;" or if the attribute was agreed on by 70% or more of participants. The participant retention rate across scoring rounds was 96% for Round 1 and 84% for Round 2, where consensus was reached. Two "member checking" procedures were undertaken to enhance the integrity of findings: a model "stress test" and an online consumer poll. Results: Thirty-two attributes and 72 attribute levels were included in the final model across four components: pre-release care planning and coordination; treatments in community; diversion from prison; and evaluation. Member checking endorsed a person-centered approach with carers and peer-support central to care. Conclusions: Participants agreed that an optimal model of care should involve a specialized team who works independent of community health service teams to directly deliver certain treatments and services while helping consumers to access external social an economic supports and services.
Neurology, Jun 8, 2020
Objective To quantify the economic and health-related quality of life (HRQoL) burden incurred by ... more Objective To quantify the economic and health-related quality of life (HRQoL) burden incurred by households with a child affected by spinal muscular atrophy (SMA). Methods Hospital records, insurance claims, and detailed resource use questionnaires completed by caregivers were used to capture the direct and indirect costs to households of 40 children affected by SMA I, II, and III in Australia between 2016 and 2017. Prevalence costing methods were used and reported in 2017 US dollar (USD) purchasing power parity (PPP). The HRQoL for patients and primary caregivers was quantified with the youth version of the EQ-5D and CareQoL multiattribute utility instruments and Australian utility weights. Results The average total annual cost of SMA per household was $143,705 USD PPP for all SMA types
American Journal of Criminal Justice, Aug 4, 2017
Public expenditure on the criminal justice system represents a significant fiscal burden to gover... more Public expenditure on the criminal justice system represents a significant fiscal burden to government worldwide, making the economic evaluation of interventions aimed at improving justice outcomes critical to informing resource allocation. This study systematically reviews and assesses the scope and quality of economic evaluations of behavioral interventions aimed at reducing reoffending. Only seventeen studies met the inclusion criteria, with wide variation in methodological approaches,
PLOS ONE, 2018
¶ inSCALE Study Group: Membership of the inSCALE study group is provided in the Acknowledgments *
Health Policy and Planning, 2015
Community health worker (CHW) programmes are currently being scaled-up in sub-Saharan Africa to i... more Community health worker (CHW) programmes are currently being scaled-up in sub-Saharan Africa to improve access to healthcare. CHWs are often volunteers; from an economic perspective, this raises considerations whether reliance on an unpaid workforce is sustainable and how to appropriately cost and value the work of CHWs. Both these questions can be informed by an understanding of CHWs' workload, their opportunity costs of time and the perceived benefits of being a CHW. However, to date few studies have fully explored the methodological challenges in valuing CHW time. We examined the costs and benefits of volunteering in a sample of 45 CHWs providing integrated community case management of common childhood illnesses in rural Uganda in February 2012 using different methods. We assessed the value of CHW time using the minimum public sector salary rate and a CHW-elicited replacement wage, as well as the opportunity cost of time based on CHW-estimated annual income and alternative work opportunities, respectively. Reported monthly CHW workload, a median of 19.3 h (range 2.5-57), was valued at USD 6.9 (range 0.9-20.4) per month from the perspective of the healthcare system (applicable replacement wage) and at a median of USD 4.1 (range 0.4-169) from the perspective of the CHWs (individual opportunity cost of time). In a discrete choice experiment on preferred work characteristics, remuneration and community appreciation dominated. We find that volunteering CHWs value the opportunity to make a social contribution, but the decision to volunteer is also influenced by anticipated future rewards. Care must be taken by those costing and designing CHW programmes to acknowledge the opportunity cost of CHWs at the margin and over the long term. Failure to properly consider these issues may lead to cost estimations below the amount necessary to scale up and sustain programmes.
Tropical Medicine & International Health, 2015
objective To explore the chronic disease services in Uganda: their level of utilisation, the tota... more objective To explore the chronic disease services in Uganda: their level of utilisation, the total service costs and unit costs per visit. methods Full financial and economic cost data were collected from 12 facilities in two districts, from the provider's perspective. A combination of ingredients-based and step-down allocation costing approaches was used. The diseases under study were diabetes, hypertension, chronic obstructive pulmonary disease (COPD), epilepsy and HIV infection. Data were collected through a review of facility records, direct observation and structured interviews with health workers. results Provision of chronic care services was concentrated at higher-level facilities. Excluding drugs, the total costs for NCD care fell below 2% of total facility costs. Unit costs per visit varied widely, both across different levels of the health system, and between facilities of the same level. This variability was driven by differences in clinical and drug prescribing practices. conclusion Most patients reported directly to higher-level facilities, bypassing nearby peripheral facilities. NCD services in Uganda are underfunded particularly at peripheral facilities. There is a need to estimate the budget impact of improving NCD care and to standardise treatment guidelines. keywords non-communicable diseases, human immunodeficiency virus, cost, low-and middleincome countries, Uganda, health systems