Table 1

 Demographic, clinical, and working status characteristics of men, women, and all patients included in the study

VariableMale patients (n = 159)Female patients (n = 417)All patients (n = 576)
Values are means (SD), except for categorical variables (†) which are presented as n (%).
Comorbidity was defined as any disease or disorder apart from rheumatoid arthritis as reported by the patient.
Theoretical ranges for variables are as follows: early morning stiffness, 0–720 min; all three VAS scales, 0–100 mm = worst score; joint score, 0–534; ESR, 2–140 mm/h1st; functional disability, 0–3 = worst score; radiological damage, 0–448; and Qol, −0.594 to 1 = best health status.
*Data on radiological damage were only available for those patients included in one of the two inception cohorts.
ESR, erythrocyte sedimentation rate; HAQ, Health Assessment Questionnaire; VAS, visual analogue scale.
Age (years)62 (12)58 (14)59 (14)
Education, high vocational/university education†22 (14%)50 (12%)72 (13%)
Marital status, married†135 (85%)270 (65%)405 (70%)
Comorbidities, ⩾1 comorbidity†82 (52%)221 (53%)303 (53%)
Diseases duration (years)6.4 (5.0)7.2 (7.0)7.0 (6.8)
Morning stiffness (min)44 (104)36 (63)38 (76)
VAS general well being (mm)31 (25)35 (27)34 (26)
VAS pain (mm)21 (25)27 (27)25 (26)
Joint score (Thompson joint score)37 (64)51 (81)47 (77)
ESR (mm/h1st)20 (17)23 (19)22 (18)
Rheumatoid factor positive†75 (69%)165 (60%)240 (63%)
Radiological damage (Sharp/van der Heijde*)39 (42)33 (46)45 (45)
Functional disability (HAQ)0.9 (0.8)1.3 (0.7)1.2 (0.8)
Quality of life (EuroQol)0.67 (0.3)0.62 (0.3)0.63 (0.3)
Working status among patients of working age (<65 years, n = 352):
    Not working and not work disabled†17 (19%)105 (40%)122 (35%)
    Working and no work disability†40 (44%)76 (29%)116 (33%)
    Partially work disabled because of rheumatoid arthritis but working†11 (12%)15 (6%)26 (7%)
    Work disabled because of rheumatoid arthritis and not working†23 (25%)65 (25%)88 (25%)