ArticleFrontiers in psychology2021
Valuation of Lost Productivity in Caregivers: A Validation Study.
Article in Frontiers in psychology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Measuring, valuing, and incorporating patient and caregiver productivity costs in economic evaluations: a scoping review and environmental scan.International journal of technology assessment in health care · 2026Article
- Cross-cultural adaptation and psychometric testing of the Turkish Version of the Workplace Activity Limitations Scale (WALS) in people with inflammatory arthritis.Rheumatology advances in practice · 2026Article
- Measuring and valuing patient and caregiver productivity costs: a scoping review protocol.BMJ open · 2025Article
- Assessing the socio-economic burden of inherited and inflammatory neuromuscular diseases (BIND study): a study protocol.Orphanet journal of rare diseases · 2025Article
- Societal, occupational, and economic considerations for women with (M)INOCA: a narrative review.International journal of occupational medicine and environmental health · 2025Review
- Economic Impacts and Quality of Life for Caregivers of Patients with Retinitis Pigmentosa: A Cross-Sectional Japanese Study.Healthcare (Basel, Switzerland) · 2023Article
- Time and Distance Cost of Longer Acting Anti-VEGF Therapies for Macular Degeneration: Contributions to Drug Cost Comparisons.Clinical ophthalmology (Auckland, N.Z.) · 2022Article
- Critical analysis of instruments for assessment of presenteeism: an integrative review.Revista brasileira de medicina do trabalho : publicacao oficial da Associacao Nacional de Medicina do Trabalho-ANAMTArticle
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThis study aimed to: (a) adapt the previously validated Valuation of Lost Productivity (VOLP) questionnaire for people with health problems, to a caregiver version to measure productivity losses associated with caregiving responsibilities, and (b) evaluate measurement feasibility and validity of an online version of the caregiver VOLP questionnaire.
methodsA mixed methods design was utilized. Qualitative methods, such as reviewing existing questionnaires that measured caregiver work productivity losses and performing one-on-one interviews with caregivers, were used for VOLP adaptation and online conversion. Quantitative methods were used to evaluate feasibility and validity of the online VOLP. The Work Productivity and Activity Impairment (WPAI) questionnaire for caregivers was included to compare its absenteeism and presenteeism outcomes and their correlations with VOLP outcomes.
resultsWhen adapting the VOLP for caregivers, our qualitative analysis showed the importance of adding three major components: caregiving time, work productivity loss related to volunteer activities and caregivers' lost job opportunities. A total of 383 caregivers who completed online survey were included in our final quantitative analysis. We found small Spearman rank correlations between VOLP and WPAI, observing a larger correlation between their absenteeism [
conclusionThe study provides evidence of the feasibility and preliminary validity evidence of the adapted VOLP caregiver questionnaire in measuring productivity losses due to caregiving responsibilities, when compared with the results for WPAI and the results from the previous patient-VOLP validation study.
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