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| Current smokers (n = 70) | Former smokers (n = 71) | Ever smoked (n = 141) | ||||
|---|---|---|---|---|---|---|
| Smoking years before rheumatoid arthritis | 34.4 (10.8) | 25.5 (11.4) | 29.8 (11.9) | |||
| Smoking pack ( = 20 cigarettes) | 9105 (6606) | 7385 (6455) | 8285 (6566) | |||
| Pack year ( = 20 cigarettes daily for one year) median | 24.9 (18.0) | 20.2 (17.7) | 22.7 (17.9) | |||
| Years stopped smoking before rheumatoid arthritis | 15.7 (8.9) |
Values are mean (SD).
