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Assessing sufficient capability: A new approach to economic evaluation

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  • Mitchell, Paul Mark
  • Roberts, Tracy E.
  • Barton, Pelham M.
  • Coast, Joanna

Abstract

Amartya Sen's capability approach has been discussed widely in the health economics discipline. Although measures have been developed to assess capability in economic evaluation, there has been much less attention paid to the decision rules that might be applied alongside. Here, new methods, drawing on the multidimensional poverty and health economics literature, are developed for conducting economic evaluation within the capability approach and focusing on an objective of achieving “sufficient capability”. This objective more closely reflects the concern with equity that pervades the capability approach and the method has the advantage of retaining the longitudinal aspect of estimating outcome that is associated with quality-adjusted life years (QALYs), whilst also drawing on notions of shortfall associated with assessments of poverty. Economic evaluation from this perspective is illustrated in an osteoarthritis patient group undergoing joint replacement, with capability wellbeing assessed using ICECAP-O. Recommendations for taking the sufficient capability approach forward are provided.

Suggested Citation

  • Mitchell, Paul Mark & Roberts, Tracy E. & Barton, Pelham M. & Coast, Joanna, 2015. "Assessing sufficient capability: A new approach to economic evaluation," Social Science & Medicine, Elsevier, vol. 139(C), pages 71-79.
    • Handle: RePEc:eee:socmed:v:139:y:2015:i:c:p:71-79
    DOI: 10.1016/j.socscimed.2015.06.037
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    1. Brazier, John & Ratcliffe, Julie & Salomon, Joshua & Tsuchiya, Aki, 2016. "Measuring and Valuing Health Benefits for Economic Evaluation," OUP Catalogue, Oxford University Press, edition 2, number 9780198725923.
    2. Drummond, Michael F. & Sculpher, Mark J. & Torrance, George W. & O'Brien, Bernie J. & Stoddart, Greg L., 2005. "Methods for the Economic Evaluation of Health Care Programmes," OUP Catalogue, Oxford University Press, edition 3, number 9780198529453.
    3. Paul Anand & Graham Hunter & Ian Carter & Keith Dowding & Francesco Guala & Martin Van Hees, 2009. "The Development of Capability Indicators," Journal of Human Development and Capabilities, Taylor & Francis Journals, vol. 10(1), pages 125-152.
    4. E. Wetering & E. Stolk & N. Exel & W. Brouwer, 2013. "Balancing equity and efficiency in the Dutch basic benefits package using the principle of proportional shortfall," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 14(1), pages 107-115, February.
    5. Bleichrodt, Han & Quiggin, John, 2013. "Capabilities as menus: A non-welfarist basis for QALY evaluation," Journal of Health Economics, Elsevier, vol. 32(1), pages 128-137.
    6. Comim,Flavio & Qizilbash,Mozaffar & Alkire,Sabina (ed.), 2008. "The Capability Approach," Cambridge Books, Cambridge University Press, number 9780521862875, October.
    7. Alkire, Sabina & Foster, James, 2011. "Counting and multidimensional poverty measurement," Journal of Public Economics, Elsevier, vol. 95(7-8), pages 476-487, August.
    8. Simon, Judit & Anand, Paul & Gray, Alastair & Rugkåsa, Jorun & Yeeles, Ksenija & Burns, Tom, 2013. "Operationalising the capability approach for outcome measurement in mental health research," Social Science & Medicine, Elsevier, vol. 98(C), pages 187-196.
    9. Foster, James & Greer, Joel & Thorbecke, Erik, 1984. "A Class of Decomposable Poverty Measures," Econometrica, Econometric Society, vol. 52(3), pages 761-766, May.
    10. Birch, Stephen & Donaldson, Cam, 2003. "Valuing the benefits and costs of health care programmes: where's the 'extra' in extra-welfarism?," Social Science & Medicine, Elsevier, vol. 56(5), pages 1121-1133, March.
    11. Grewal, Ini & Lewis, Jane & Flynn, Terry & Brown, Jackie & Bond, John & Coast, Joanna, 2006. "Developing attributes for a generic quality of life measure for older people: Preferences or capabilities?," Social Science & Medicine, Elsevier, vol. 62(8), pages 1891-1901, April.
    12. Brouwer, Werner B.F. & Culyer, Anthony J. & van Exel, N. Job A. & Rutten, Frans F.H., 2008. "Welfarism vs. extra-welfarism," Journal of Health Economics, Elsevier, vol. 27(2), pages 325-338, March.
    13. Flynn, Terry N. & Louviere, Jordan J. & Peters, Tim J. & Coast, Joanna, 2007. "Best-worst scaling: What it can do for health care research and how to do it," Journal of Health Economics, Elsevier, vol. 26(1), pages 171-189, January.
    14. Richard Cookson, 2005. "QALYs and the capability approach," Health Economics, John Wiley & Sons, Ltd., vol. 14(8), pages 817-829, August.
    15. Paula Lorgelly, 2015. "Choice of Outcome Measure in an Economic Evaluation: A Potential Role for the Capability Approach," PharmacoEconomics, Springer, vol. 33(8), pages 849-855, August.
    16. Sabina Alkire & James Foster, 2011. "Understandings and misunderstandings of multidimensional poverty measurement," The Journal of Economic Inequality, Springer;Society for the Study of Economic Inequality, vol. 9(2), pages 289-314, June.
    17. Coast, Joanna, 2009. "Maximisation in extra-welfarism: A critique of the current position in health economics," Social Science & Medicine, Elsevier, vol. 69(5), pages 786-792, September.
    18. N/A, 2008. "Introductory Remarks," China Report, , vol. 44(1), pages 31-32, February.
    19. Sugden, Robert, 1993. "Welfare, Resources, and Capabilities: A Review [Inequality Reexamined]," Journal of Economic Literature, American Economic Association, vol. 31(4), pages 1947-1962, December.
    20. Culyer, A J, 1989. "The Normative Economics of Health Care Finance and Provision," Oxford Review of Economic Policy, Oxford University Press and Oxford Review of Economic Policy Limited, vol. 5(1), pages 34-58, Spring.
    21. Koen Decancq & María Ana Lugo, 2013. "Weights in Multidimensional Indices of Wellbeing: An Overview," Econometric Reviews, Taylor & Francis Journals, vol. 32(1), pages 7-34, January.
    22. Miqdad Asaria & Susan Griffin & Richard Cookson & Sophie Whyte & Paul Tappenden, 2015. "Distributional Cost‐Effectiveness Analysis of Health Care Programmes – A Methodological Case Study of the UK Bowel Cancer Screening Programme," Health Economics, John Wiley & Sons, Ltd., vol. 24(6), pages 742-754, June.
    23. Joanna Coast, 1999. "The appropriate uses of qualitative methods in health economics," Health Economics, John Wiley & Sons, Ltd., vol. 8(4), pages 345-353, June.
    24. Martin Ravallion & Shaohua Chen & Prem Sangraula, 2009. "Dollar a Day Revisited," The World Bank Economic Review, World Bank, vol. 23(2), pages 163-184, June.
    25. Paul M. Mitchell & Tracy E. Roberts & Pelham M. Barton & Beth S. Pollard & Joanna Coast, 2013. "Predicting the ICECAP-O Capability Index from the WOMAC Osteoarthritis Index," Medical Decision Making, , vol. 33(4), pages 547-557, May.
    26. Terry N. Flynn & Elisabeth Huynh & Tim J. Peters & Hareth Al‐Janabi & Sam Clemens & Alison Moody & Joanna Coast, 2015. "Scoring the Icecap‐a Capability Instrument. Estimation of a UK General Population Tariff," Health Economics, John Wiley & Sons, Ltd., vol. 24(3), pages 258-269, March.
    27. Catherine Henderson & Martin Knapp & José-Luis Fernández & Jennifer Beecham & Shashivadan P Hirani & Martin Cartwright & Lorna Rixon & Michelle Beynon & Anne Rogers & Peter Bower & Helen Doll & Ray Fi, 2013. "Cost effectiveness of telehealth for patients with long term conditions (Whole Systems Demonstrator telehealth questionnaire study): nested economic evaluation in a pragmatic, cluster randomised contr," LSE Research Online Documents on Economics 56772, London School of Economics and Political Science, LSE Library.
    28. L. Couzner & J. Ratcliffe & L. Lester & T. Flynn & M. Crotty, 2013. "Measuring and valuing quality of life for public health research: application of the ICECAP-O capability index in the Australian general population," International Journal of Public Health, Springer;Swiss School of Public Health (SSPH+), vol. 58(3), pages 367-376, June.
    29. Coast, Joanna & Smith, Richard D. & Lorgelly, Paula, 2008. "Welfarism, extra-welfarism and capability: The spread of ideas in health economics," Social Science & Medicine, Elsevier, vol. 67(7), pages 1190-1198, October.
    30. Joanna Coast & Richard Smith & Paula Lorgelly, 2008. "Should the capability approach be applied in Health Economics?," Health Economics, John Wiley & Sons, Ltd., vol. 17(6), pages 667-670, June.
    31. Sabina Alkire & Maria Santos, 2013. "A Multidimensional Approach: Poverty Measurement & Beyond," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 112(2), pages 239-257, June.
    32. Joanna Coast & Philip Kinghorn & Paul Mitchell, 2015. "The Development of Capability Measures in Health Economics: Opportunities, Challenges and Progress," The Patient: Patient-Centered Outcomes Research, Springer;International Academy of Health Preference Research, vol. 8(2), pages 119-126, April.
    33. Philip Kinghorn & Angela Robinson & Richard Smith, 2015. "Developing a Capability-Based Questionnaire for Assessing Well-Being in Patients with Chronic Pain," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 120(3), pages 897-916, February.
    34. A. Atkinson, 2003. "Multidimensional Deprivation: Contrasting Social Welfare and Counting Approaches," The Journal of Economic Inequality, Springer;Society for the Study of Economic Inequality, vol. 1(1), pages 51-65, April.
    35. Nord, Erik, 2013. "Disability weights in the Global Burden of Disease 2010: Unclear meaning and overstatement of international agreement," Health Policy, Elsevier, vol. 111(1), pages 99-104.
    36. Olsen, Jan Abel & Donaldson, Cam, 1998. "Helicopters, hearts and hips: Using willingness to pay to set priorities for public sector health care programmes," Social Science & Medicine, Elsevier, vol. 46(1), pages 1-12, January.
    37. David A Clark & Mozaffar Qizilbash, 2008. "Core Poverty, Vagueness and Adaptation: A New Methodology and Some Results for South Africa," Journal of Development Studies, Taylor & Francis Journals, vol. 44(4), pages 519-544, April.
    38. Leah Couzner & Maria Crotty & Richard Norman & Julie Ratcliffe, 2013. "A Comparison of the EQ-5D-3L and ICECAP-O in an Older Post-Acute Patient Population Relative to the General Population," Applied Health Economics and Health Policy, Springer, vol. 11(4), pages 415-425, August.
    39. Anand, Paul & Dolan, Paul, 2005. "Equity, capabilities and health," Social Science & Medicine, Elsevier, vol. 60(2), pages 219-222, January.
    40. Peter Makai & Willemijn Looman & Eddy Adang & René Melis & Elly Stolk & Isabelle Fabbricotti, 2015. "Cost-effectiveness of integrated care in frail elderly using the ICECAP-O and EQ-5D: does choice of instrument matter?," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 16(4), pages 437-450, May.
    41. Coast, Joanna & Flynn, Terry N. & Natarajan, Lucy & Sproston, Kerry & Lewis, Jane & Louviere, Jordan J. & Peters, Tim J., 2008. "Valuing the ICECAP capability index for older people," Social Science & Medicine, Elsevier, vol. 67(5), pages 874-882, September.
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    Cited by:

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    2. Clarke, Philip & Erreygers, Guido, 2020. "Defining and measuring health poverty," Social Science & Medicine, Elsevier, vol. 244(C).
    3. Kinghorn, Philip, 2019. "Using deliberative methods to establish a sufficient state of capability well-being for use in decision-making in the contexts of public health and social care," Social Science & Medicine, Elsevier, vol. 240(C).
    4. Changli Zhu & Zhongfa Zhou & Guoxuan Ma & Linjiang Yin, 2022. "Spatial differentiation of the impact of transport accessibility on the multidimensional poverty of rural households in karst mountain areas," Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, Springer, vol. 24(3), pages 3863-3883, March.
    5. Anders Herlitz & David Horan, 2017. "A Model and Indicator of Aggregate Need Satisfaction for Capped Objectives and Weighting Schemes for Situations of Scarcity," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 133(2), pages 413-430, September.
    6. Enrica Chiappero‐Martinetti & Paola Salardi & Francesco Scervini, 2019. "Estimating conversion rates: A new empirical strategy with an application to health care in Italy," Health Economics, John Wiley & Sons, Ltd., vol. 28(6), pages 748-764, June.
    7. Paul Mark Mitchell & Samantha Husbands & Sarah Byford & Philip Kinghorn & Cara Bailey & Tim J. Peters & Joanna Coast, 2021. "Challenges in developing capability measures for children and young people for use in the economic evaluation of health and care interventions," Health Economics, John Wiley & Sons, Ltd., vol. 30(9), pages 1990-2003, September.
    8. Wildman, John & McMeekin, Peter & Grieve, Eleanor & Briggs, Andrew, 2016. "Economic evaluation of integrated new technologies for health and social care: Suggestions for policy makers, users and evaluators," Social Science & Medicine, Elsevier, vol. 169(C), pages 141-148.
    9. Ilias Goranitis & Joanna Coast & Ed Day & Alex Copello & Nick Freemantle & Emma Frew, 2017. "Maximizing Health or Sufficient Capability in Economic Evaluation? A Methodological Experiment of Treatment for Drug Addiction," Medical Decision Making, , vol. 37(5), pages 498-511, July.
    10. Dukhanin, Vadim & Searle, Alexandra & Zwerling, Alice & Dowdy, David W. & Taylor, Holly A. & Merritt, Maria W., 2018. "Integrating social justice concerns into economic evaluation for healthcare and public health: A systematic review," Social Science & Medicine, Elsevier, vol. 198(C), pages 27-35.
    11. Herlitz, Anders & Horan, David, 2016. "Measuring needs for priority setting in healthcare planning and policy," Social Science & Medicine, Elsevier, vol. 157(C), pages 96-102.
    12. Paul Mark Mitchell & Tracy E. Roberts & Pelham M. Barton & Joanna Coast, 2017. "Applications of the Capability Approach in the Health Field: A Literature Review," Social Indicators Research: An International and Interdisciplinary Journal for Quality-of-Life Measurement, Springer, vol. 133(1), pages 345-371, August.
    13. R. Scott Braithwaite & Mark S. Roberts, 2021. "Are Discount Rates Too High? Population Health and Intergenerational Equity," Medical Decision Making, , vol. 41(2), pages 245-249, February.
    14. Kinghorn, Philip & Afentou, Nafsika, 2021. "Eliciting a monetary threshold for a year of sufficient capability to inform resource allocation decisions in public health and social care," Social Science & Medicine, Elsevier, vol. 279(C).
    15. Helen Weatherly & Rita Faria & Bernard Van den Berg & Mark Sculpher & Peter O’Neill & Kay Nolan & Julie Glanville & Jaana Isojarvi & Erin Baragula & Mary Edwards, 2017. "Scoping review on social care economic evaluation methods," Working Papers 150cherp, Centre for Health Economics, University of York.
    16. Matthew Franklin & Katherine Payne & Rachel A. Elliott, 2018. "Quantifying the Relationship between Capability and Health in Older People: Can’t Map, Won’t Map," Medical Decision Making, , vol. 38(1), pages 79-94, January.
    17. Coast, Joanna, 2018. "A history that goes hand in hand: Reflections on the development of health economics and the role played by Social Science & Medicine, 1967–2017," Social Science & Medicine, Elsevier, vol. 196(C), pages 227-232.
    18. Wouters, S. & van Exel, N.J.A. & Rohde, K.I.M. & Vromen, J.J. & Brouwer, W.B.F., 2017. "Acceptable health and priority weighting: Discussing a reference-level approach using sufficientarian reasoning," Social Science & Medicine, Elsevier, vol. 181(C), pages 158-167.
    19. Petra Baji & Miklós Farkas & Ágota Dobos & Zsombor Zrubka & Levente Kovács & László Gulácsi & Márta Péntek, 2021. "Comparing the measurement properties of the ICECAP-A and ICECAP-O instruments in ages 50–70: a cross-sectional study on a representative sample of the Hungarian general population," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 22(9), pages 1453-1466, December.

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