Table 1 Comparison between demographic and disease activity indices for all subject's on database and those that were selected for the study, with numbers for each index shown in parentheses.
| Total study group (n = 537)) | Current study group (n = 225) | p Value | |
|---|---|---|---|
| % Female | 76±4 (537) | 71±6 (225) | 0.160 |
| RF seropositive (% ) | 79±4 (482) | 79±6 (217) | 0.842 |
| Age at 1 Jan 2000 (years) | 55.1±0.96 (534) | 54.5±1.54 (225) | 0.521 |
| AGA | 34.5±1.9 (520) | 32.7±2.7 (220) | 0.291 |
| PGA | 40.1±2.1 (520) | 39.9±3.1 (220) | 0.917 |
| VAS pain | 37.4±2.2 (521) | 36.0±3.2 (221) | 0.477 |
| No of swollen joints | 5.2±0.4 (514) | 4.7±0.6 (222) | 0.118 |
| No of tender joints | 3.4±0.4 (514) | 3.3±0.6 (222) | 0.640 |
| EMS (min) | 50.8±5.7 (351) | 50.2±8.6 (165) | 0.909 |
| HAQ | 1.33±0.07 (519) | 1.19±0.10 (221) | 0.026* |
| ESR (min) | 26.7±2.4 (340) | 27.3±3.4 (157) | 0.262 |
| DAS28 | 5.88±0.40 (334) | 5.61±0.57 (156) | 0.447 |
| Disease duration at 2001 (years) | 10.5±0.7 (519) | 8.9±1.1 (223) | 0.023* |
| Weight (kg) | 70.6±1.3 (483) | 71.7±2.1 (210) | 0.362 |
Results shown as mean±95% confidence interval (CI) unless stated otherwise.