Table 1.
Basic characteristics of study population.
| Characteristic | Controls | RA patients | p value |
|---|---|---|---|
| N=57,973 | N=11,782 | ||
| Age, Mean±SD | 60.8±17.0 | 61.1±17.0 | 0.174 |
| Gender: Male | 13384 (23.1%) | 2679 (22.7%) | 0.413 |
| BMI, Mean±SD | 28.0±6.58 | 28.2±6.21 | 0.003 |
| SES: | |||
| Low | 22657 (39.2%) | 4505 (38.3%) | Ref. |
| Medium | 22831 (39.5%) | 4816 (41.0%) | 0.009 |
| High | 12334 (21.3%) | 2438 (20.7%) | 0.831 |
| Smoking | 16671 (28.8%) | 3865 (32.8%) | <0.001 |
| CRP, Mean±SD | 0.93±1.94 | 1.25±1.43 | <0.001 |
| VTE | 1841 (3.18%) | 815 (6.92%) | <0.001 |
SD: Standard deviation; BMI: Body mass index, kg/m2; SES: Socioeconomic status; CRP (years 2002–2013), reference range: 0–0.5 mg/dL; VTE: Venous thromboembolism, defined as DVT, PE or both.