| Name of the Instrument/Tool | Work and Productivity, Activity, Impairment Questionnaire (WPAI-RA) |
| First Description |
Zhang W, Bansback N, Boonen A, Young A, Singh A, Anis AH. Validity of the work productivity and activity impairment questionnaire--general health version in patients with rheumatoid arthritis. Arthritis Res Ther. 2010;12(5):R177. doi: 10.1186/ar3141. Epub 2010 Sep 22. PMID: 20860837; PMCID: PMC2991008. |
| Year | 1993 |
| Domains | |
| Concept of constructs | Work |
| Population/Disease | Disease specific |
| Originally developed for | Rheumatoid Arthritis (RA) |
| Other rheumatic diseases where can be applied (only if validated) |
--- |
| Additional population with no rheumatic diseases |
No |
| Language: Originally published in | English |
| Available in Language | Romanian, Russian, Italian, Hungarian, Portuguese, Ukrainian, French, Dutch, Spanish, Czech, Polish, English |
| REFERENCE IDENTIFICATION | |
| Author/s | Reilly MCReilly MC, Zbrozek AS, Dukes EM. |
| Title | The validity and reproducibility of a work productivity and activity impairment instrument. |
| Journal | Pharmacoeconomics |
| Year | 1993 |
| Vol | 4 |
| Num | 5 |
| Pages | 353-365 |
| Country | USA |
| Language | English |
| Other references of interest | |
| Link | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2991008/ |
| Brief Description |
Validity of the work productivity and activity impairment questionnaire - general health version in patients with rheumatoid arthritis |
| Link | https://pubmed.ncbi.nlm.nih.gov/29503178/ |
| Brief Description |
Relationship Between Work Productivity and Clinical Characteristics in Rheumatoid Arthritis. |
| Instrument/Tool Translations References | |
| Link | https://pubmed.ncbi.nlm.nih.gov/24671921/ |
| Brief Description |
Linguistic validation into 20 languages and content validity of the rheumatoid arthritis-specific Work Productivity and Activity Impairment questionnaire. |
| DEVELOPER CONTACT INFORMATION | |
| Correspondence to | Aslam Anis |
| aslam.anis@ubc.ca | |
| Address | www.reillyassociates.net |
| Website | --- |
| Available | --- |
| Links | --- |
| DESCRIPTION OF THE INSTRUMENT | |
| Type Of Measure | Questionnaire |
| Brief Description |
The Work Productivity and Activity Impairment (WPAI) questionnaire is an instrument covering both work and daily activity impairments. Its six items ascertain employment status and quantify absenteeism due to health problems, presenteeism and overall health-related impairment in both paid work and regular activities over the previous 7 days. Four outcomes can be derived: i) percent of work time missed due to health; ii) percent of impairment while working due to health in past 7 days; iii) percent of overall work impairment overall; iv) activity impairment due to health |
| Number of Items | 6 |
| Range | --- |
| Responses options/scale |
Yes - |
| Developed for | Research, Clinical practice |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered |
| Recommendations to score |
The WPAI-RA consists of six questions- similar to the WPIA:GH but with adaptations for referring to RA. Four main outcomes can be generated from the WPAI-RA and expressed in percentages by multiplying the following scores by 100: 1) percent work time missed due to health = Q2/(Q2 + Q4) for those who were currently employed; 2) percent impairment while working due to health = Q5/10 for those who were currently employed and actually worked in the past seven days; 3) percent overall work impairment due to health Q2/(Q2 + Q4) + ((1 - Q2/(Q2 + Q4)) × (Q5/10)) for those who were currently employed; 4) percent activity impairment due to health Q6/10 for all respondents |
| Score Interpretation | Greater scores indicate greater impact on health |
| Cut-off points | --- |
| Cut-off points applied to | --- |
| Smallest detectable change if described | --- |
| Smallest detectable change applied to | --- |
| Completion time by the patient | - minutes |
| Scoring time by the assessor | - minutes |
| Training to score | Not necessary |
| Strengths | Useful in clinical practice & research |
| Limitations | Complex scoring |
| OTHER COMMENTS | |
| Other Comments | --- |