Table 2 Mean number (range) of categories with impairments at baseline and follow-up by International Classification of Functioning, Disability and Health (ICF) Core Set for rheumatoid arthritis (RA) component and proportions of patients (%) with impairment changes over 6 months in components
Impairments at baseline (n)Impairments at follow-up (n)ImprovementUnchangedWorsening
2 Qualifiers1 Qualifier0 Qualifiers1 Qualifier2 Qualifiers
Body functions (n = 25)13.8 (3 to 20)11.0 (0 to 22)1%20%71%8%0%
Body structures (n = 18)8.0 (0 to 16)6.5 (0 to 13)1%18%73%8%0%
Activities and participation (n = 32)13.1 (0 to 27)9.2 (1 to 25)1%20%70%8%0%
Environmental factors (n = 21)3.3 (0 to 11)1.9 (0 to 7)3%16%68%12%0%
All categories (n = 96)38.1 (7 to 70)28.6 (1 to 62)1%19%71%9%0%