|
Clinical and demographic data of the rheumatoid arthritis patients at baseline |
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| Patients (n = 505) |
Controls (n = 970) |
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|
|
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| Age (years) |
54.5 ± 14.0 |
57.4 ± 11.6 |
| Sex (females/males) |
342/163 (67.7/32.3) |
705/265 (72.7/27.3) |
| Symptom duration (months) |
6.3 ± 2.8 |
-- |
| Prednisolone treatment (number receving prednisolone/total number of patients) |
195/456 (42.8) |
-- |
| Disease-modifying antirheumatic drug treatment (number receving DMARD/total number of patients) |
348/403 (86.4) |
-- |
| Smoking ever (current, past), (number ever smoking/total number of patients) |
321/492 (65.2) |
242/899 (26.9) |
| Anti-cyclic citrullinated peptide antibody-positive (number anti-CCP ab positive/total number of patients) |
318/468 (67.9) |
5/347 (1.4) |
| Rheumatoid factor-positive (number RF positive/total number of patients) |
264/366 (72.1) |
-- |
|
Data presented as the mean ± standard deviation or number ratio (percentage). | ||
Kokkonen et al. Arthritis Research & Therapy 2007 9:R56 doi:10.1186/ar2214 |
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