Table 4.
Logistic regression for fracture occurrence in bisphosphonate use categories
| Bisphosphonate category | Patient‐years (%) | Fracture years n (%) | Odds ratio (95%CI) | p value |
|---|---|---|---|---|
| No bisphosphonate | 244 (46.9) | 56 (23) | 1 | |
| Prior to bisphosphonate | 131 (25.2) | 44 (34) | 1.67 (1.02 to 2.75) | 0.04 |
| On bisphosphonate | 114 (21.9) | 24 (17) | 1.09 (0.61 to 1.94) | 0.76 |
| After bisphosphonate | 31 (6.0) | 6 (19) | 0.89 (0.34 to 2.39) | 0.82 |
| Constant | 0.3 |
Note: Results show number of fracture years and odds ratio for fractures compared to no bisphosphonate patients, adjusted for age, sex, and family history of OI.