Hazard ratios of development of rheumatoid arthritis according to drug exposure
| Crude HR | Adjusted HR (95% CI)* | Competitive risk adjusted HR (95% CI)*† | |
| Tamoxifen | Reference | Reference | Reference |
| Aromatase inhibitors | 1.67 (1.08 to 2.60) | 1.64 (1.04 to 2.58) | 1.62 (1.03 to 2.56) |
| Anastrozole | 1.77 (1.10 to 2.85) | 1.73 (1.06 to 2.81) | 1.75 (1.07 to 2.86) |
| Letrozole | 1.51 (0.89 to 2.56) | 1.49 (0.87 to 2.56) | 1.47 (0.86 to 2.51) |
| Exemestane | 1.78 (0.76 to 4.17) | 1.75 (0.74 to 4.16) | 1.47 (0.63 to 3.43) |
*Adjusted for age at the beginning of the exposure period, level of neoplasia.
†Competing risk survival model.