ArticleHealth and quality of life outcomes2017
Psychometric validation of a multi-dimensional capability instrument for outcome measurement in mental health research (OxCAP-MH).
Article in Health and quality of life outcomes, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.
What it found
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The trial behind it
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Who cites it
27 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Measuring capabilities in health and physical activity promotion: a systematic review.BMC public health · 2021Pooled it
- Pramipexole in addition to mood stabilisers for treatment-resistant bipolar depression: the PAX-BD randomised double-blind placebo-controlled trial.Health technology assessment (Winchester, England) · 2025Trial
- Cost-Effectiveness of Positive Memory Training (PoMeT) for the Treatment of Depression in Schizophrenia.International journal of environmental research and public health · 2022Trial
- Article
- Women's health and well-being over the life course: conceptual framing supported by a scoping review.BMJ open · 2026Article
- Healthy Lives 5 Axis Scale for individuals with complex health and social needs: assessment of validity and reliability.BMC health services research · 2025Article
- Population normative data for OxCAP-MH capability scores.The European journal of health economics : HEPAC : health economics in prevention and care · 2025Article
- Measuring refugees' capabilities: translation, adaptation, and valuation of the OxCAP-MH into Juba Arabic for use among South Sudanese male refugees in Uganda.Journal of patient-reported outcomes · 2024Article
- Article
- The IBER study: a feasibility randomised controlled trial of imagery based emotion regulation for the treatment of anxiety in bipolar disorder.International journal of bipolar disorders · 2023Article
- A longitudinal study of capability-based quality of life and mental health in the first 5-months of lockdown restrictions in the UK.BMC public health · 2023Article
- The Achieved Capabilities Questionnaire for Community Mental Health (ACQ-CMH): A consumer-based measure for the evaluation of community mental health interventions.American journal of community psychology · 2022Article
- Exploring the over-time, multifaceted impacts of three COVID-19 lockdowns on aspects of capability, wellbeing and mental health across vulnerabilities in Austria.Scientific reports · 2022Article
- Comparison of capability and health-related quality of life instruments in capturing aspects of mental well-being in people with schizophrenia and depression.BJPsych open · 2022Article
- Does the relative importance of the OxCAP-MH's capability items differ according to mental ill-health experience?Health and quality of life outcomes · 2022Article
- PAX-D: study protocol for a randomised placebo-controlled trial evaluating the efficacy and mechanism of pramipexole as add-on treatment for people with treatment resistant depression.Evidence-based mental health · 2022Article
- A Dynamic Approach to Economic Priority Setting to Invest in Youth Mental Health and Guide Local Implementation: Economic Protocol for Eight System Dynamics Policy Models.Frontiers in psychiatry · 2022Article
- Article
- Study protocol for a randomised placebo-controlled trial of pramipexole in addition to mood stabilisers for patients with treatment resistant bipolar depression (the PAX-BD study).BMC psychiatry · 2021Article
- Effectiveness and cost-effectiveness of integrating the management of depression into routine HIV Care in Uganda (the HIV + D trial): A protocol for a cluster-randomised trial.International journal of mental health systems · 2021Article
Corrections and comments
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Authors and funding
7 authors.
Funding
Abstract
backgroundPatient reported outcome measures (PROMs) are widely used in mental healthcare research for quality of life assessment but most fail to capture the breadth of health and non-health domains that can be impacted. We report the psychometric validation of a novel, multi-dimensional instrument based on Amartya Sen's capability approach intended for use as an outcome measure in mental health research.
methodsThe Oxford Capabilities Questionnaire for Mental Health (OxCAP-MH) is a 16-item self-complete capability measure that covers multiple domains of functioning and welfare. Data for validation of the instrument were collected through a national randomised controlled trial of community treatment orders for patients with psychosis. Complete OxCAP-MH data were available for 172 participants. Internal consistency was established with Cronbach's alpha; an interclass correlation coefficient was used to assess test-retest reliability in a sub-sample (N = 50) tested one week apart. Construct validity was established by comparing OxCAP-MH total scores with established instruments of illness severity and functioning: EuroQol (EQ-5D), Brief Psychiatric Rating Scale (BPRS), Global Assessment of Functioning (GAF) and Objective Social Outcomes Index (SIX). Sensitivity was established by calculating standard error of measurement using distributional methods.
resultsThe OxCAP-MH showed good internal consistency (Cronbach's alpha 0.79) and test-retest reliability (ICC = 0.86). Convergent validity was evidenced by strong correlations with the EQ-5D (VAS 0.52, p < .001) (Utility 0.45, p < .001), and divergent validity through more modest associations with the BPRS (-0.41, p < .001), GAF (0.24, p < .001) and SIX (0.12, p = ns). A change of 9.2 points on a 0-100 scale was found to be meaningful on statistical grounds.
conclusionsThe OxCAP-MH has demonstrable reliability and construct validity and represents a promising multi-dimensional alternative to existing patient-reported outcome measures for quality of life used in mental health research.
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