Work ability: a new outcome measure in rheumatoid arthritis?

Objectives: To assess the relationship between disease activity and work ability, quality of life (QoL), and fatigue in patients with RA during a 12-month course of the tumour necrosis factor (TNF)-blocking agent adalimumab.Methods: RA patients in the working age category who started treatment with adalimumab were included consecutively and followed up for 12 months. Generalized estimating equation (GEE) analyses were used to study relationships between disease activity and the outcome variables work ability, QoL, and fatigue at baseline, 6 months, and 12 months. Disease activity was measured using the 28-joint Disease Activity Score (DAS28), quality of life was assessed with the Rheumatoid Arthritis-specific Quality of Life instrument (RAQoL), and fatigue was assessed using the Checklist Individual Strength (CIS) questionnaire and the Need for Recovery scale (NFR).Results: After 1 year, markedly improvement was seen not only in the DAS28 (from 5.2 ± 1.2 to 3.1 ± 1.6) but also in work ability, RAQoL, and ...