Characteristics of 10,319 patients with RA at baseline. Data are mean (SD) unless otherwise indicated.
| Variable | |
|---|---|
| Age, yrs | 59.0 (13.1) |
| Male, % | 22.8 |
| Education level, yrs, % | 13.5 |
| 0–8 | 2.3 |
| 8–11 | 7.2 |
| 12 | 35.8 |
| 13–15 | 26.5 |
| ≥ 16 | 28.2 |
| Ethnic origin, % | |
| White, not of hispanic origin | 91.6 |
| Black, not of hispanic origin | 3.8 |
| Asian or Pacific Islander | 1.0 |
| American Indian or Alaskan native | 0.9 |
| Hispanic | 2.4 |
| Other | 0.5 |
| RA duration, yrs | 12.8 (11.1) |
| Baseline PCS | 36.5 (11.0) |
| Baseline MCS | 49.7 (11.1) |
| Baseline HAQ | 1.01 (0.71) |
| No. deaths | 1317 |
PCS: SF-36 physical component summary; MCS: SF-36 mental component summary; HAQ: Health Assessment Questionnaire-Disability Index; RA: rheumatoid arthritis.