Table 3 Incidence rates of fractures for study population, by anatomic site and sex
| Anatomic site | RA patients | Non-RA patients § | |||||
|---|---|---|---|---|---|---|---|
| Fractures, n | Person-years |
IR (95% CI) | Fractures, n | Person-years |
IR (95% CI) |
RR † (95% CI) | |
| All | |||||||
| Wrist | 234 | 92,167 |
2.5 (2.2-2.9) | 1,088 | 492,138 |
2.2 (2.1-2.3) |
1.15 (1.0-1.32) |
| Humerus | 143 | 92,326 |
1.6 (1.3-1.8) | 498 | 493,117 |
1.0 (0.9-1.1) |
1.53 (1.27-1.84) |
| Hip | 311 | 92,161 |
3.4 (3-3.7) | 1,027 | 492,569 |
2.1 (2-2.2) |
1.62 (1.43-1.84) |
| Pelvis | 304 | 92,100 |
3.3 (2.9-5.7) | 804 | 492,735 |
1.6 (1.5-1.7) |
2.02 (1.77-2.30) |
| Any site | 872 | 91,314 |
9.6 (8.9-10.2) | 3,096 | 488,929 |
6.3 (6.1-6.6) |
1.51 (1.40-1.63) |
| Women | |||||||
| Wrist | 197 | 67,533 |
2.9 (2.5-3.3) | 933 | 357,899 |
2.6 (2.4-2.8) |
1.12 (0.96-1.31) |
| Humerus | 130 | 67,646 |
1.9 (1.6-2.3) | 432 | 358,719 |
1.2 (1.1-1.3) |
1.60 (1.32-1.95) |
| Hip | 253 | 67,535 |
3.8 (3.3-4.2) | 873 | 358,252 |
2.4 (2.3-2.6) |
1.54 (1.34-1.77) |
| Pelvis | 267 | 67,449 |
4.0 (3.5-4.4) | 700 | 358,388 |
2.0 (1.8-2.1) |
2.03 (1.76-2.34) |
| Any site | 742 | 66,785 |
11.1 (10.3-11.9) | 2,653 | 355,094 |
7.5 (7.2-7.8) |
1.49 (1.37-1.62) |
| Men | |||||||
| Wrist | 37 | 24,634 |
1.5 (1.0-2.0) | 155 | 134,239 |
1.2 (1.0-1.3) |
1.30 (0.91-1.86) |
| Humerus | 13 | 24,680 |
0.5 (0.2-0.8) | 66 | 134,398 |
0.5 (0.4-0.6) |
1.08 (0.60-1.96) |
| Hip | 58 | 24,626 |
2.4 (1.8-3.0) | 154 | 134,317 |
1.2 (1.0-1.3) |
2.05 (1.52-2.77) |
| Pelvis | 37 | 24,651 |
1.5 (1.0-2.0) | 104 | 134,346 |
0.8 (0.6-0.9) |
1.95 (1.34-2.84) |
| Any site | 130 | 24,530 |
5.3 (4.4-6.2) | 443 | 133,835 |
3.3 (3.0-3.6) |
1.60 (1.32-1.95) |