Work Productivity and Activity Impairment Questionnaire.
WPAI
- What it measures
- Health-related lost productivity over the past 7 days: Absenteeism (work time missed), Presenteeism (impairment while working), overall Work Productivity Loss, and Activity Impairment (non-work daily activities).
- Length and format
- 6 (WPAI-GH general health; condition-specific versions similar). mixed - hours (absenteeism) + 0-10 numeric ratings (impairment) (self-report questionnaire)
- Language versions
- 150+ validated language versions (Reilly Associates registry)
- Normative data
- Normative data for this instrument is held in our reference library. The per-population breakdown is not published here.
- Licence
- public-domain / open
Licence classification is a research judgement by the catalogue’s authors, not legal advice, and it can be out of date. Confirm terms with the copyright holder or publisher before using an instrument, especially for commercial use.
- Reference
- Reilly, M.C., Zbrozek, A.S., & Dukes, E.M. (1993). The validity and reproducibility of a work productivity and activity impairment instrument. PharmacoEconomics, 4(5), 353-365. https://www.reillyassociates.net/
Choosing between this and the alternatives
We do not deliver this instrument. If you are selecting a measure for a research programme, a national survey or an assessment product, and the question is which instrument, in which language, against which norms and under which licence, that is the work we do.
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