Table 2.
Incidence of Fracture and Mortality During the Follow‐Up
| Parameter | All incident low‐trauma fractures | Incident MOF | Mortality | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Patients n (%) | PY | Incidence per 1000 PY (95% CI) | IRR (95% CI) | p | Patients n (%) | PY | Incidence per 1000 PY (95% CI) | IRR (95% CI) | p | Patients n (%) | PY | Incidence per 1000 PY (95% CI) | IRR (95% CI) | p | |
| Total follow‐up | |||||||||||||||
| AFF (n = 55) | 31 (56) | 218 | 142 (100–202) | 1.30 (0.82–2.04) | 0.117 | 23 (42) | 220 | 104 (69–157) | 1.28 (0.74–2.15) | 0.171 | 5 (9) | 340 | 15 (6–35) | 0.29 (0.09, 0.75) | 0.002 |
| pMOF (n = 165) | 61 (37) | 560 | 109 (85–140) | 46 (28) | 562 | 82 (61–109) | 36 (22) | 713 | 50 (36–70) | ||||||
| Imminent risk* | |||||||||||||||
| AFF (n = 55) | 13 (24) | 91 | 143 (83–246) | 1.11 (0.54–2.15) | 0.364 | 9 (16) | 105 | 86 (45–165) | 0.86 (0.36–1.86) | 0.359 | 0 (0) | 105 | 0 | NA | 0.038 |
| pMOF (n = 165) | 36 (22) | 280 | 128 (93–178) | 30 (18) | 301 | 100 (70–143) | 9 (5) | 318 | 28 (15–54) | ||||||
Bold values are significant at p < 0.05.. AFF = atypical femoral fracture; CI = confidence interval; IRR = incidence rate ratio; MOF = major osteoporotic fracture; pMOF = peripheral major osteoporotic fracture; PY = patient‐years. * follow‐up censored at maximum 2 years