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McDool E, Mukuria C, Peasgood T. Psychometric Performance of the EQ Health and Wellbeing Short in a United Kingdom Population Sample. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2024; 27:1215-1224. [PMID: 38795959 DOI: 10.1016/j.jval.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 04/22/2024] [Accepted: 05/13/2024] [Indexed: 05/28/2024]
Abstract
OBJECTIVES This study assessed the psychometric performance and construct validity of the EQ Health and Wellbeing Short (EQ-HWB-S), using a validated measure, the EQ-5D-5L, as a comparator. METHODS The experimental version of the EQ-HWB-S was compared with the EQ-5D-5L to assess the psychometric performance of the measures. Data were drawn from the valuation stages of the Extending the Quality-Adjusted Life-Year project (UK general population, n = 429) and the EQ-5D-5L UK valuation pilot study (UK general population, n = 248). Construct validity was assessed based on convergent validity, using Spearman correlations and Pearson correlations. Known-group validity was assessed by estimating effect sizes to assess the ability of the EQ-HWB-S and EQ-5D-5L to discriminate between known groups based on "healthy" status, presence of a long-term condition, health and life satisfaction, age, and employment status. The degree of agreement in utility values across instruments was also evaluated using Bland-Altman plots. RESULTS Strong associations (rs ≥ 0.5, P < .001) were found between conceptually overlapping dimensions and the utility scores of the EQ-HWB-S and EQ-5D-5L. The instruments performed comparably in discriminating between known groups including healthy versus unhealthy groups (based on the visual analog scale ≥ 80), long-term condition (vs no long-term condition), and above versus below average health and life satisfaction and employed (vs unemployed and long-term sick). CONCLUSIONS The EQ-HWB-S performs favorably with utility values successfully discriminating between groups in which differences are expected. Convergence between the EQ-HWB-S and EQ-5D-5L is evident, especially between conceptually overlapping dimensions.
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Affiliation(s)
- Emily McDool
- Sheffield Centre for Health and Related Research (SCHARR), University of Sheffield, Sheffield, England, UK
| | - Clara Mukuria
- Sheffield Centre for Health and Related Research (SCHARR), University of Sheffield, Sheffield, England, UK.
| | - Tessa Peasgood
- Sheffield Centre for Health and Related Research (SCHARR), University of Sheffield, Sheffield, England, UK
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Long C, Mao Z, Yang Z. A Head-to-Head Comparison of EQ-HWB and EQ-5D-5L in Patients, Carers, and General Public in China. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2024; 27:848-856. [PMID: 38447744 DOI: 10.1016/j.jval.2024.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 01/04/2024] [Accepted: 02/25/2024] [Indexed: 03/08/2024]
Abstract
OBJECTIVES This study aimed to understand the psychometric properties of EQ Health and Wellbeing (EQ-HWB) and to examine its relationship with EQ-5D-5L in a sample covering patients, carers, and general public. METHODS A cross-sectional study was conducted in Guizhou Province, China. The acceptability, convergent validity (using Spearman correlation coefficients), internal structure (using exploratory factor analysis), and known-group validity of EQ-HWB, EQ-HWB-Short (EQ-HWB-S), and EQ-5D-5L were reported and compared. RESULTS A total of 323 participants completed the survey, including 106 patients, 101 carers, and 116 individuals from the general public. Approximately 7.4% of participants had at least 1 missing response. In the EQ-HWB and EQ-5D-5L items related to activities, there were more level 1 responses. The correlations between EQ-HWB and EQ-5D-5L items ranged from low to high, confirming the convergent validity of similar aspects between the 2 instruments. Notably, EQ-HWB measures 2 additional factors compared with EQ-5D-5L or EQ-HWB-S, both of which share 3 common factors. When the patient group was included, EQ-5D-5L had the largest effect size, but it failed to differentiate between the groups of general public and carers. Both EQ-HWB and EQ-HWB-S demonstrated better known-group validity results when carers were included. CONCLUSIONS EQ-HWB measures a broader quality of life construct that goes beyond health measured by EQ-5D-5L. By encompassing a broader scope, the impact of healthcare interventions may become diluted, given that other factors can influence well-being outcomes as significantly as health conditions do.
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Affiliation(s)
- Chen Long
- Department of Health Services Management, Guizhou Medical University, Guiyang, China
| | - Zhuxin Mao
- Centre for Health Economics Research and Modelling Infectious Diseases, Vaccine and Infectious Disease Institute, University of Antwerp, Antwerp, Belgium
| | - Zhihao Yang
- Department of Health Services Management, Guizhou Medical University, Guiyang, China; Center of Medicine Economics and Management Research, Guizhou Medical University, Guiyang, China.
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Kuharic M, Mulhern B, Sharp LK, Turpin RS, Pickard AS. Comparison of the EQ-HWB and EQ-HWB-S With Other Preference-Based Measures Among United States Informal Caregivers. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2024; 27:967-977. [PMID: 38492925 DOI: 10.1016/j.jval.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/14/2024] [Accepted: 03/05/2024] [Indexed: 03/18/2024]
Abstract
OBJECTIVES Several measures have been used or developed to capture the health and well-being of caregivers, including the EQ Health and Well-being (EQ-HWB) and its short form, EQ-HWB-S. This study aimed to evaluate the psychometric properties and construct validity of the EQ-HWB/EQ-HWB-S in a US caregiver population. METHODS A cross-sectional survey was conducted involving 504 caregivers. Eligible participants were 18+ years old, provided unpaid care to a relative/friend aged 18+ in the past 6 months, and spent on average of at least 1 hour per week caregiving. Survey included the following measures: EQ-HWB, Adult Social Care Outcomes Toolkit for Carers-Carer, CarerQol, and EQ-5D-5L. Psychometric properties were assessed using response distributions, floor/ceiling effects, Spearman's correlation for convergent validity, and effect sizes (ES) for known-group validity based on caregiving situations and intensity. RESULTS The average age of caregivers was 49.2 (SD = 15.4), with 57.5% being female. More than half (54.4%) reported high caregiving intensity, and 68.3% lived with the care recipient. The EQ-HWB-S index showed a strong positive correlation with the EQ-5D-5L (rs = 0.72), Adult Social Care Outcomes Toolkit for Carers (rs = 0.54), and CarerQol (rs = 0.54) indices. Notably, the EQ-HWB-S index showed the largest ES among measures in differentiating caregiving scenarios with a large ES for caregiver's general health (d = 1.00) and small ES for caregiving intensity (d = 0.39). CONCLUSIONS Results support construct validity of EQ-HWB and EQ-HWB-S as measures for assessing health and well-being of adult informal caregivers in comparison with other validated instruments. Differing levels of known-group validity across anchors emphasize the importance of selecting appropriate measures for caregivers, depending on research question and/or intervention aims.
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Affiliation(s)
- Maja Kuharic
- Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois Chicago, Chicago, IL, USA; Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.
| | - Brendan Mulhern
- Centre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, NSW, Australia
| | - Lisa K Sharp
- Department of Biobehavioral Nursing Science, College of Nursing, University of Illinois Chicago, Chicago, IL, USA
| | | | - A Simon Pickard
- Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois Chicago, Chicago, IL, USA
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Kuharić M, Pickard AS, Mukuria C, Finch AP. The Measurement Properties of the EQ-HWB and the EQ-HWB-S in Italian Population: A Comparative Study With EQ-5D-5L. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2024; 27:955-966. [PMID: 38490471 DOI: 10.1016/j.jval.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 02/12/2024] [Accepted: 03/07/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVES The EQ Health and Well-being, EQ-HWB (25-item) and the EQ-HWB-S (9-item), are new generic measures of health and well-being. The purpose of this study was to examine the measurement properties of the EQ-HWB and EQ-HWB-S measures in relation to the EQ-5D-5L among the Italian general population. METHODS A cross-sectional survey was conducted from October 2020 to February 2021, followed by secondary analysis of collected data from Italian adults. This analysis included response pattern distributions, correlation strength, and known-group comparison. Known-group comparison was assessed using effect sizes (ES) across health conditions, caregiver status, and social care usage. The EQ-HWB-S index-based score was based on the UK pilot value set, whereas the Italian value set was used for scoring the EQ-5D-5L index. RESULTS Out of the 1182 participants, 461 reported having a chronic condition, 185 identified as caregivers, and 42 were social care users. EQ-HWB items (7.5%) showed fewer ceiling effects than EQ-5D-5L items (34.7%). Strong correlations (rs > 0.5) were found between overlapping EQ-HWB and EQ-5D-5L items. EQ-HWB-S and EQ-5D-5L index scores demonstrated similar discrimination based on symptomatic chronic conditions (ES d = 0.68 vs d = 0.71), but EQ-HWB-S had slightly higher ES for social care users (ES d = 0.84 vs d = 0.74). CONCLUSIONS Initial evidence supports the validity of EQ-HWB/EQ-HWB-S because outcome measures in the Italian population. EQ-HWB-S performed comparably to EQ-5D-5L among patients and was better in differentiating social care users. A slight decrease in discriminative properties for caregivers was observed when transitioning from EQ-HWB to EQ-HWB-S.
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Affiliation(s)
- Maja Kuharić
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois Chicago, IL, USA.
| | - A Simon Pickard
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, Chicago, IL, USA; Maths in Health BV, Amsterdam, The Netherlands
| | - Clara Mukuria
- Division of Population Health, University of Sheffield, Sheffield, England, UK
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Kuharic M, Mulhern B, Sharp LK, Turpin RS, Pickard AS. Understanding caregiver burden from multiple perspectives: dyadic agreement between caregiver and care recipient. Qual Life Res 2024; 33:1719-1734. [PMID: 38632146 DOI: 10.1007/s11136-024-03643-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2024] [Indexed: 04/19/2024]
Abstract
PURPOSE Caregiver burden (CB) is typically self-assessed by caregivers. However, an emerging concept is assessment of CB by the recipients of care, i.e., the patient. The specific objectives are (1) to assess the level of agreement between care recipients' and caregivers' view on CB, across financial, physical, emotional, and social domains; (2) to explore two care recipient perspectives: their self-perceived burden (CR-SPB), and their interpretation of the caregiver's view (Proxy-CB). METHODS Data were collected from 504 caregiver-care recipient dyads in the U.S. using an online Qualtrics panel. The survey assessed caregiver burden using CarerQol and newly developed items. The level of agreement between responses was quantified using weighted kappa (κ) coefficients for individual items and intraclass correlation coefficients (ICC) for index/summary scores. RESULTS The average age of caregivers was 49.2 years, and 62.7 years for care recipients. Dyads most commonly consisted of spouses/partners (34.5%); 68.3% lived together. Proxy-CB aligned more closely with caregiver's view, with moderate to substantial agreement across CB domains (from κ = 0.48 for emotional to κ = 0.66 for financial). In the same perspective, the CarerQol-7D Index showed moderate agreement (ICC = 0.58) and the summary score of CB items substantial agreement (ICC = 0.76). Care recipients generally overestimated CB in the Proxy-CB perspective, while they underestimated it in the CR-SPB perspective. CONCLUSION Results demonstrate there is a difference between perspectives. Strong agreement in Proxy-CB perspective suggests that care recipients can potentially substitute for caregivers depending on the domain. CR-SPB agrees less with caregivers and may provide complementary information.
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Affiliation(s)
- Maja Kuharic
- Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois, Chicago, IL, USA.
- Department of Medical Social Sciences, Northwestern University Feinberg School of Medicine, 625 N Michigan Ave, Chicago, IL, 60611, USA.
| | - Brendan Mulhern
- Centre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, NSW, Australia
| | - Lisa K Sharp
- Department of Biobehavioral Nursing Science, College of Nursing, University of Illinois Chicago, Chicago, IL, USA
| | | | - A Simon Pickard
- Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois, Chicago, IL, USA
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Bailey C, Dalziel K, Jones R, Hiscock H, Devlin NJ, Peasgood T. The Validity of the EuroQol Health and Wellbeing Short Version (EQ-HWB-S) Instrument in Parents of Children With and Without Health Conditions. PHARMACOECONOMICS 2024; 42:163-179. [PMID: 38238605 PMCID: PMC11168993 DOI: 10.1007/s40273-024-01351-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 06/13/2024]
Abstract
BACKGROUND The EuroQol Health and Wellbeing Short Version (EQ-HWB-S) instrument has been developed to measure the health and wellbeing of care-recipients and their caregivers for use in economic evaluation.The EQ-HWB-S has nine items, and pilot UK preference weights have now been developed. OBJECTIVE We aimed to investigate the validity of the instrument in parents of children with and without health conditions. METHODS EQ-HWB-S data were sourced from an Australian paediatric multi-instrument comparison study. We analysed the baseline characteristics and response distribution of the EQ-HWB-S items. Assessment of known-group validity was conducted for EQ-HWB-S items, level sum-scores and preference-weighted scores, including partial effects. Known-group analyses included three child health variables and where caregivers reported coronavirus disease 2019 (COVID-19) had impacted their wellbeing. We included analyses across gender, controlled for child and parent demographic variables, and compared scores across child health conditions. RESULTS Item responses were distributed as expected, with higher skew for mobility and activities. Parents experienced high levels of exhaustion. We detected significant differences between groups for level sum-scores and preference-weighted scores, as hypothesised; all tests were significant (p < 0.001), with moderate effect sizes (effect sizes were slightly higher for female than male parents). The regression analysis identified significantly different EQ-HWB-S scores for child health samples compared with the general population after controlling for demographic variables. Differences were observed between child health conditions. CONCLUSION The EQ-HWB-S is a useful instrument to measure parent quality of life for economic evaluation in this population. Data were limited to one time point; further research should investigate the instrument's sensitivity to change and test-retest reliability in this population.
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Affiliation(s)
- Cate Bailey
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia.
| | - Kim Dalziel
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
| | - Renee Jones
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
| | - Harriet Hiscock
- Health Services and Economics, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Health Services Research Unit, Royal Children's Hospital, Melbourne, VIC, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Nancy J Devlin
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
| | - Tessa Peasgood
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
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Feng YS, Kohlmann T, Peasgood T, Engel L, Mulhern B, Pickard AS. Scoring the EQ-HWB-S: can we do it without value sets? A non-parametric item response theory analysis. Qual Life Res 2024; 33:1211-1222. [PMID: 38381281 PMCID: PMC11045574 DOI: 10.1007/s11136-024-03601-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2024] [Indexed: 02/22/2024]
Abstract
BACKGROUND Only one pilot value set (UK) is currently available for the EQ Health and Wellbeing Instrument short version (EQ-HWB-S). As an alternative to preference-weighted scoring, we examined whether a level summary score (LSS) is appropriate for the EQ-HWB-S using Mokken scaling analyses. METHODS Data from patients, carers and the general population collected during the developmental phase of the EQ-HWB-S in Australia, US and UK were used, noting 3 of 9 items have since undergone revision. EQ-HWB-S data fit was examined using R package Mokken scaling's monotone homogeneity model, utilizing the automated item selection procedure (AISP) as well as Loevinger's scaling coefficients for items and the scale (HS). Manifest monotonicity was assessed by examining whether the cumulative probability for responses at or above each response level did not decrease across the summary score. RESULTS EQ-HWB-S data were available for 3340 respondents: US = 903, Australia = 514 and UK = 1923. Mean age was 50 ± 18 and 1841 (55%) were female. AISP placed all 9 items of the EQ-HWB-S on a single scale when the lower bound was set to < 0.448. Strong scalability (HS = 0.561) was found for the EQ-HWB-S as a single scale. Stronger scales were formed by separating the psychosocial items (n = 6, HS = 0.683) and physical sensation items (n = 3, HS = 0.713). No violations of monotonicity were found except for the items mobility and daily activities for the subgroups with long-term conditions and UK subjects, respectively. DISCUSSION As EQ-HWB-S items formed a strong scale and subscales based on Mokken analysis, LSS is a promising weighting-free approach to scoring.
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Affiliation(s)
- You-Shan Feng
- Institute for Clinical Epidemiology and Applied Biometrics, Medical University of Tübingen, Silcherstraße 5, 72076, Tübingen, Germany.
| | - Thomas Kohlmann
- Institute for Community Medicine, University of Greifswald, Greifswald, Germany
| | - Tessa Peasgood
- Division of Population Health, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
| | - Lidia Engel
- Monash University Health Economics Group, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
| | - Brendan Mulhern
- Centre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, Australia
| | - A Simon Pickard
- Department of Pharmacy Systems, Outcomes and Policy, College of Pharmacy, University of Illinois Chicago, Chicago, IL, USA
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Bailey C, Dalziel K, Constable L, Devlin NJ, Hiscock H, Skouteris H, Peasgood T. The performance of the EQ-HWB-S as a measure of quality-of-life of caregivers in families that have experienced adverse events. THE EUROPEAN JOURNAL OF HEALTH ECONOMICS : HEPAC : HEALTH ECONOMICS IN PREVENTION AND CARE 2024:10.1007/s10198-024-01688-w. [PMID: 38578477 DOI: 10.1007/s10198-024-01688-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/28/2024] [Indexed: 04/06/2024]
Abstract
PURPOSE The recently developed EQ Health and Wellbeing Instrument (EQ-HWB) is a broad, generic measure of quality-of-life designed to be suitable for caregivers. The aim of this study was to investigate performance and validity of the 9-item version (EQ-HWB-S) for caregivers where families had experienced adverse-life-events. METHODS Using survey data from caregivers of children aged 0-8 years attending a community-health centre in 2021-2022, the general performance, feasibility, convergent and known-group validity, responsiveness-to-change, and test-retest reliability of the EQ-HWB-S was assessed. Twelve semi-structured interviews were conducted with survey respondents to assess acceptability and content validity. RESULTS The sample included 234 caregivers at baseline (81% female, mean age 36-years, 38% Australian-born) and 190 at 6-months follow-up. Most EQ-HWB-S item responses were evenly spread, except for 'Mobility'. The instrument showed good convergent validity with psychological distress (Kessler 6 (K6)) and personal-wellbeing (PWI-A) scales. EQ-HWB-S level sum-scores and preference-weighted scores were significantly different in all known-group analyses, in expected directions, and the instrument was responsive to change. For test-retest reliability, Intraclass Correlation Coefficients were excellent and individual item Kappa scores were moderate. The instrument was well received by interviewees who found the questions clear and relevant. The items were appropriate for parents experiencing adversity and carers of children with additional needs. CONCLUSION The EQ-HWB-S appeared valid, responsive to change, feasible, and well accepted by caregivers. By demonstrating the validity of the EQ-HWB-S in this hard-to-reach population of caregivers in families experiencing adverse events, this study adds to existing international evidence supporting its use.
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Affiliation(s)
- Cate Bailey
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia.
| | - Kim Dalziel
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
- Health Services and Economics, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Leanne Constable
- Health Services and Economics, Murdoch Children's Research Institute, Melbourne, VIC, Australia
| | - Nancy J Devlin
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
| | - Harriet Hiscock
- Health Services and Economics, Murdoch Children's Research Institute, Melbourne, VIC, Australia
- Health Services Research Unit, Royal Children's Hospital, Melbourne, VIC, Australia
- Department of Paediatrics, The University of Melbourne, Melbourne, VIC, Australia
| | - Helen Skouteris
- Health and Social Care Unit, School of Public Health and Preventive Medicine, Monash University, Victoria, Australia
| | - Tessa Peasgood
- Melbourne Health Economics, Melbourne School of Population and Global Health, The University of Melbourne, Level 4, 207 Bouverie St, Carlton, VIC, 3053, Australia
- Sheffield Centre for Health and Related Research, School of Medicine and Population Health, University of Sheffield, Sheffield, UK
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Lee P, Engel L, Lubetkin E, Gao L. Exploring the Comparability Between EQ-5D and the EQ Health and Wellbeing in the General Australian Population. VALUE IN HEALTH : THE JOURNAL OF THE INTERNATIONAL SOCIETY FOR PHARMACOECONOMICS AND OUTCOMES RESEARCH 2024; 27:508-517. [PMID: 38286249 DOI: 10.1016/j.jval.2024.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 12/12/2023] [Accepted: 01/15/2024] [Indexed: 01/31/2024]
Abstract
OBJECTIVES The EQ Health and Wellbeing (EQ-HWB) is a novel measure that conceptually overlaps with the 5-level EQ-5D (EQ-5D-5L) while capturing broader dimensions of health and well-being. This study aimed to explore the extent to which the EQ-HWB and EQ-5D-5L capture overlapping or complementary constructs and to explore the discriminative ability of the EQ-HWB Short version (EQ-HWB-S) as a multiattribute utility instrument in the Australian setting. METHODS A secondary analysis of data from a nationally representative cross-sectional survey of 2002 Australian adults was performed. The survey included socioeconomic questions and health characteristics and the EQ-HWB and EQ-5D-5L instruments. Convergent and known-group validity were evaluated through Spearman rank correlation and multivariable regression analyses, respectively. An exploratory factor analysis was also performed to explore the underlying constructs of the 2 measures. RESULTS Correlation coefficients varied from moderate to strong (rs ≥ 0.40) between the EQ-5D-5L and the corresponding EQ-HWB dimensions (all P < .001). Based on the exploratory factor analysis, both instruments measure similar underlying constructs, with the EQ-HWB capturing broader aspects of well-being. The known-group analysis demonstrated the relative discriminative ability of the EQ-HWB-S in capturing broader aspects of health and well-being. CONCLUSIONS The EQ-HWB was at least moderately correlated with the EQ-5D-5L in overlapping domains/dimensions and demonstrated greater sensitivity in participants with mental health problems versus the EQ-5D-5L. Our findings support future research exploring the value of the EQ-HWB-S as a multiattribute utility instrument for the general Australian population.
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Affiliation(s)
- Peter Lee
- Deakin Health Economics, Institute for Health Transformation, Faculty of Health, Deakin University, Burwood, Victoria, Australia.
| | - Lidia Engel
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Erica Lubetkin
- Department of Community Health and Social Medicine, CUNY School of Medicine, New York, NY, USA
| | - Lan Gao
- Deakin Health Economics, Institute for Health Transformation, Faculty of Health, Deakin University, Burwood, Victoria, Australia
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Engel L, Kosowicz L, Bogatyreva E, Batchelor F, Devlin N, Dow B, Gilbert AS, Mulhern B, Peasgood T, Viney R. Face Validity of Four Preference-Weighted Quality-of-Life Measures in Residential Aged Care: A Think-Aloud Study. THE PATIENT 2023; 16:655-666. [PMID: 37803217 PMCID: PMC10570159 DOI: 10.1007/s40271-023-00647-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 08/28/2023] [Indexed: 10/08/2023]
Abstract
OBJECTIVE There is an increased use of preference-weighted quality-of-life measures in residential aged care to guide resource allocation decisions or for quality-of-care assessments. However, little is known about their face validity (i.e., how understandable, appropriate and relevant the measures are 'on their face' when respondents complete them). The aim of this study was to assess the face validity of four preference-weighted measures (i.e., EQ-5D-5L, EQ-HWB, ASCOT, QOL-ACC) in older people living in residential aged care. METHODS Qualitative cognitive think-aloud interviews were conducted using both concurrent and retrospective think-aloud techniques. To reduce burden, each resident completed two measures, with the four measures randomised across participants. Audio recordings were transcribed and framework analysis was used for data analysis, based on an existing framework derived from the Tourangeau four-stage response model. RESULTS In total, 24 interviews were conducted with residents living across three residential aged care facilities in Melbourne, Australia. Response issues were identified across all four measures, often related to comprehension and difficulty selecting a response level due to double-barrelled and ambiguous items that have different meanings in the residential aged care context. We also identified issues related to understanding instructions, non-adherence to the recall period, and noted positive responding that requires attention when interpreting the data. CONCLUSIONS Our findings provide further evidence on the appropriateness of existing measures, indicating numerous response issues that require further research to guide the selection process for research and practice.
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Affiliation(s)
- Lidia Engel
- Monash University Health Economics Group, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
| | - Leona Kosowicz
- National Ageing Research Institute, Parkville, VIC, Australia
| | - Ekaterina Bogatyreva
- Monash University Health Economics Group, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
- School of Public Health and Social Development, Deakin University, Burwood, VIC, Australia
| | - Frances Batchelor
- National Ageing Research Institute, Parkville, VIC, Australia
- The University of Melbourne, Parkville, VIC, Australia
| | - Nancy Devlin
- The University of Melbourne, Parkville, VIC, Australia
| | - Briony Dow
- National Ageing Research Institute, Parkville, VIC, Australia
- The University of Melbourne, Parkville, VIC, Australia
| | - Andrew S Gilbert
- National Ageing Research Institute, Parkville, VIC, Australia
- Department of Social Inquiry, La Trobe University, Bundoora, VIC, Australia
| | - Brendan Mulhern
- The Centre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, NSW, Australia
| | | | - Rosalie Viney
- The Centre for Health Economics Research and Evaluation, University of Technology Sydney, Sydney, NSW, Australia
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Jakubczyk M. Re-revisiting the Utilities of Health States Worse than Dead: The Problem Remains. Med Decis Making 2023; 43:875-885. [PMID: 37846095 DOI: 10.1177/0272989x231201147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
BACKGROUND In valuation studies of the EQ-5D-5L instrument, the composite time tradeoff method (cTTO) is often used to elicit preferences. In cTTO, some health states are considered worse than dead (WTD) and are assigned negative utility values. However, these negative values correlate poorly with state severity, which suggests that cTTO is insufficiently sensitive. A recent threshold explanation has been offered to account for the lack of correlation: because the severity threshold beyond which a state is considered WTD differs between respondents, the correlation should be studied for individual respondents clustered by the number of WTD states. The results obtained in such a threshold approach were interpreted to disprove the insensitivity of the cTTO method. AIM To scrutinize the threshold explanation and test whether it indeed refutes the insensitivity of cTTO. METHODS The study uses data from the EQ-5D-5L Polish valuation study, which includes cTTO responses from 1,510 participants, each of whom evaluated 10 EQ-5D-5L states. The correlation analysis and threshold approach are repeated to confirm the results from previous studies. The data are then modified in 2 contrasting ways. First, negative utilities are randomly reshuffled to test whether the threshold approach can capture cTTO insensitivity. Second, individual-level regressions are used to simulate negative values to ensure they correlate with severity at the individual respondent level, verifying whether the overall severity-utility correlation should be observed. RESULTS First, reshuffling negative utilities does not change the results of the threshold approach. Hence, the threshold explanation fails to prove cTTO sensitivity. Second, when sensitivity was introduced on an individual level, a significant overall correlation between severity and negative utility arose. CONCLUSION cTTO is insensitive to severity for WTD states. HIGHLIGHTS For the composite time tradeoff method, the utility values of health states worse than dead correlate poorly with state severity, which suggests that cTTO has insufficient sensitivity.Recently, a so-called threshold explanation was offered for the lack of correlation.I show why the threshold explanation fails and why the composite time tradeoff is indeed insensitive for worse-than-dead states.
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Affiliation(s)
- Michał Jakubczyk
- SGH Warsaw School of Economics, Decision Analysis and Support Unit, Warsaw, Poland
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