| Name of the Instrument/Tool | Work and Productivity, Activity, Impairment Questionnaire (WPAI) |
| First Description |
Reilly MC, Zbrozek AS, Dukes EM. The validity and reproducibility of a work productivity and activity impairment instrument. Pharmacoeconomics. 1993;4(5):353-65 |
| Year | 1993 |
| Domains | |
| Concept of constructs | Work |
| Population/Disease | Disease specific |
| Originally developed for | Plaque psoriasis, Ankylosing spondylitis (AS), Rheumatoid Arthritis (RA) |
| Other rheumatic diseases where can be applied (only if validated) |
--- |
| Additional population with no rheumatic diseases |
Yes Mental Health/Several diseases |
| Language: Originally published in | English |
| Available in Language | Czech, Hungarian, Italian, Dutch, Polish, Spanish, German, Portuguese, Russian, French, Ukrainian, Romanian, 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/pubmed/20860837 |
| Brief Description |
Validity of the work productivity and activity impairment questionnaire - general health version in patients with 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 | Dr. Margaret C. Reilly |
| mreilly@reillyassociates.net | |
| 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 | Clinical practice, Research |
| PRACTICAL APPLICATION | |
| Method of administration | Self-administered |
| Recommendations to score |
The WPAI-GH consists of six questions: 1 = currently employed; 2 = hours missed due to health problems; 3 = hours missed other reasons; 4 = hours actually worked; 5 = degree health affected productivity while working (using a 0 to 10 Visual Analogue Scale (VAS)); 6 = degree health affected productivity in regular unpaid activities (VAS).
|
| 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 | - |
| Strengths | Useful in clinical practice & research |
| Limitations | Complex scoring |
| OTHER COMMENTS | |
| Other Comments |
The WPAI was originally developed in English (US) , to measure the effect of general health (WPAI:GH) and specific symptoms or problems on the ability to work and perform daily activities and has been translated into 114 different languages through a harmonization process of independent translations, backward translations and review by the developer. |