From: Usage of skin care products and risk of rheumatoid arthritis: results from the Swedish EIRA study
RF+RA | RF-RA | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Exposure | Number of exposed cases/controlsa | RRb | 95% CI | RRc | 95% CI | Number of exposed cases/controlsa | RRb | 95% CI | RRc | 95% C |
Women | Women | |||||||||
A | 73/118 | 1.0 | Reference | 1.0 | Reference | 30/118 | 1.0 | Reference | 1.0 | Reference |
B | 118/174 | 1.1 | 0.7-1.5 | 1.0 | 0.6-1.5 | 60/174 | 1.3 | 0.8-2.2 | 1.2 | 0.7-2.1 |
C | 115/230 | 0.8 | 0.5-1.2 | 0.7 | 0.5-1.1 | 63/230 | 1.1 | 0.6-1.7 | 0.9 | 0.5-1.7 |
D | 215/370 | 0.9 | 0.6-1.3 | 0.8 | 0.6-1.2 | 104/370 | 1.1 | 0.7-1.7 | 1.0 | 0.6-1.7 |
E | 139/294 | 0.7 | 0.5-1.0 | 0.7 | 0.4-1.0 | 94/294 | 1.2 | 0.7-2.0 | 1.0 | 0.6-1.8 |
Men | Men | |||||||||
A | 212/359 | 1.0 | Reference | 1.0 | Reference | 103/359 | 1.0 | Reference | 1.0 | Reference |
B | 31/78 | 0.6 | 0.4-1.0 | 0.7 | 0.4-1.1 | 22/78 | 1.0 | 0.6-1.6 | 1.0 | 0.6-1.8 |
C | 14/27 | 0.8 | 0.4-1.6 | 0.8 | 0.4-1.6 | 8/27 | 0.9 | 0.4-2.1 | 1.0 | 0.4-2.3 |
D | 7/13 | 1.0 | 0.4-2.5 | 1.0 | 0.4-2.7 | 5/13 | 1.3 | 0.5-4.0 | 1.3 | 0.4-4.1 |
E | 3/6 | 0.8 | 0.2-3.3 | 0.5 | 0.1-2.8 | 1/6 | 1.0 | 0.1-9.0 | 0.9 | 0.1-9.1 |
All | All | |||||||||
A | 285/477 | 1.0 | Reference | 1.0 | Reference | 133/477 | 1.0 | Reference | 1.0 | Reference |
B | 149/252 | 0.9 | 0.6-1.2 | 0.8 | 0.6-1.1 | 82/252 | 1.1 | 0.8-1.6 | 1.1 | 0.7-1.6 |
C | 129/257 | 0.8 | 0.6-1.1 | 0.7 | 0.5-1.1 | 71/257 | 1.0 | 0.7-1.6 | 0.9 | 0.6-1.5 |
D | 222/383 | 0.9 | 0.6-1.2 | 0.8 | 0.6-1.2 | 109/383 | 1.1 | 0.7-1.7 | 1.1 | 0.7-1.7 |
E | 142/300 | 0.7 | 0.5-1.0 | 0.7 | 0.5-1.0 | 95/300 | 1.2 | 0.7-1.9 | 1.0 | 0.6-1.7 |