Table 1.
Table of demographics for the rheumatoid arthritis and healthy control groups
| Rheumatoid arthritis | Healthy control | |
|---|---|---|
| Mean age (standard deviation) | 49.3 (11.2) | 41.5 (10.0) |
| Gender | ||
| male | 44 (9.4%) | 234 (46.8%) |
| female | 424 (90.6%) | 266 (53.2%) |
| Education | ||
| basic | 107 (23.3%) | 62 (12.9%) |
| technical | 121 (26.3%) | 85 (17.7%) |
| university | 232 (50.4%) | 334 (69.4%) |
| Annual Income | ||
| <£ 25,000 | 204 (51.8%) | 166 (39.2%) |
| 25,000 to 50,000 | 144 (36.5%) | 153 (36.1%) |
| >50,000 | 46 (11.7%) | 105 (24.8%) |
| Ethnic origin | ||
| white (U.K.) | 301 (64.6%) | 310 (66.2%) |
| white (other) | 151 (32.4%) | 81 (17.3%) |
| other | 14 (3.0%) | 77 (16.5%) |
| Marital status | ||
| single | 159 (34.0%) | 86 (18.8%) |
| married | 305 (65.2%) | 269 (58.7%) |
| living together | 42 (9.0%) | 53 (11.6%) |