Observed and expected fracture rates for patients with RA and OA by fracture type. Expected rates are calculated using the sex and age distribution of the general population seeking healthcare.
| Cohort | Fracture Type | Rates Per 100,000 Person-yrs | |||||
|---|---|---|---|---|---|---|---|
| Women | Men | All | |||||
| Observed | Expected | Observed | Expected | Observed | Expected | ||
| RA | Hip | 1066 | 691 | 727 | 401 | 967 | 605 |
| Radius | 638 | 687 | 207 | 160 | 512 | 532 | |
| Hip OA | Hip | 742 | 1228 | 462 | 604 | 624 | 965 |
| Hip* | 993 | 1228 | 657 | 595 | 852 | 962 | |
| Radius | 878 | 845 | 192 | 179 | 585 | 560 | |
| Knee OA | Hip | 918 | 1036 | 460 | 460 | 729 | 798 |
| Radius | 821 | 781 | 184 | 166 | 556 | 524 | |
↵* Sensitivity analysis where subjects with any hip prosthesis were censored at the time of joint replacement surgery (n = 17,914). RA: rheumatoid arthritis; OA: osteoarthritis.