Table 1.
Demographic characteristics*
| ERAN database (n = 1,189) | Baseline SF-36 score (n = 977) | 1-year SF-36 score (n = 609) | |
|---|---|---|---|
| Age, median (IQR) years | 58 (47–68) | 58 (48–67) | 58 (48–67) |
| BMI, median (IQR) kg/m2 | 26.8 (23.9–30.3) | 26.8 (23.9–30.3) | 26.9 (24.1–30.2) |
| Women, % (no./total) | 68 (805/1,189) | 68 (660/977) | 66 (404/609) |
| White, % (no./total) | 94 (1,116/1,188) | 97 (947/977) | 98 (594/609) |
| Current smoker, % (no./total) | 33 (388/1,166) | 34 (327/975) | 31 (191/608) |
*
The demographic characteristics of the Early Rheumatoid Arthritis Network (ERAN) study population and those with Short Form 36 (SF-36) data available were statistically similar. IQR = interquartile range; BMI = body mass index.