Determinants | N = 581 | % of Conformity | p |
---|---|---|---|
Sex | |||
Male | 141 | 65.3 | 0.04 |
Female | 440 | 55.7 | |
Postsecondary education | |||
No | 493 | 60.0 | 0.02 |
Yes | 88 | 46.6 | |
Personal or family history of psoriasis | |||
No | 484 | 60.3 | 0.01 |
Yes | 97 | 46.4 | |
No. swollen joints (28–joint count) | |||
0–3 | 105 | 49.5 | 0.04 |
4–8 | 238 | 55.9 | |
9–28 | 238 | 63.9 | |
DAS28 value | |||
0–3.2 | 29 | 37.9 | 0.03 |
3.2–5.1 | 232 | 56.0 | |
> 5.1 | 318 | 61.6 | |
Elevated level of ESR | |||
No | 305 | 53.8 | 0.02 |
Yes | 274 | 63.1 | |
Positive for RF and/or anti-CCP | |||
No | 237 | 45.6 | < 0.001 |
Yes | 344 | 66.6 | |
Definite RA | |||
No | 249 | 47.0 | < 0.001 |
Yes | 332 | 66.3 | |
Fulfilled 4 ACR criteria for diagnosis of RA | |||
No | 80 | 42.5 | 0.003 |
Yes | 501 | 60.5 | |
Observational center (14 centers) | 19 to 62 | Range 35.0% to 79.0% | — |
DAS28: Disease Activity Score 28 joints; ESR: erythrocyte sedimentation rate; RF: rheumatoid factor; anti-CCP: anti-CCP antibodies; ACR: American College of Rheumatology.