Table 2. The crude and adjusted hazard ratios for hip fracture among the sample subjects during the 4-years follow-up (N = 64956).
| Total sample N = 64956 | Non-COPD N = 48717 | COPD N = 16239 | |
|---|---|---|---|
| Occurrence of hip fracture, N (%) | 1116 (1.7%) | 715 (1.5%) | 401 (2.5%) |
| Incidence per 100000 person-year (95% CI) | 437 (435–439) | 369 (367–371) | 649 (644–654) |
| Crude HR (95% CI) | – | 1.00 | 1.78* (1.57–2.01) |
| Adjusted HR (95% CI)a | – | 1.00 | 1.59* (1.38–1.82) |
| propensity score calibration adjusted HR (95% CI)b | – | 1.00 | 1.57* (1.36–1.81) |
aAdjustment for patient’s age, sex, hypertension, stroke, hyperlipidemia and diabetes, Autoimmune and medications included Inhaled medications and Nsaid.
bAdjustment for patient’s age, sex, hypertension, stroke, hyperlipidemia and diabetes, Autoimmune, Inhaled medications, Nsaid and missing confounders including smoking, drinking and body mass index. *P < 0.001.