Return to Work in Patients With Chronic Pain

Average sick leave according to the Swedish Social Insurance registry, defined as net days.

Self-report. Work Ability Index (WAI). The questionnaire covers 7 dimensions: 1. current work ability compared with lifetime best 2. work ability in relation to the demands of the job 3. number of diagnosed illnesses or limiting conditions 4. estimated impairment owing to diseases/illnesses or limiting conditions 5. amount of sick leave during the last year 6. prognosis of work ability in 2 years' time 7. psychological resources. The dimensions have different scores. A total index is computed ranging from 7 to 49, where higher scores indicate higher work ability.