Table 2.
The risk factors for hip fracture analyzed by the Cox regression model.
| Variables | Event | PYs | Rate | Crude HR 95% CI |
Adjusted HR 95% CI |
|---|---|---|---|---|---|
| Transplantation | |||||
| No | 70 | 93116 | 7.52 | Ref | Ref |
| Yes | 17 | 7910 | 21.49 | 2.88 (1.70–4.90) | 2.71 (1.21–6.05) |
| Age group (years) | |||||
| <45 | 11 | 25593 | 4.30 | Ref | Ref |
| 45–64 | 59 | 69965 | 8.43 | 2.11 (1.11–4.03) | 1.70 (0.87–3.30) |
| ≧65 | 17 | 5467 | 31.1 | 8.40 (3.90–18.1) | 5.21 (2.26–12.0) |
| Sex | |||||
| Female | 25 | 25650 | 9.75 | Ref | Ref |
| Male | 62 | 75375 | 8.23 | 0.87 (0.55–1.39) | 1.05 (0.64–1.72) |
| CAD | |||||
| No | 67 | 87674 | 7.64 | Ref | Ref |
| Yes | 20 | 13351 | 15.0 | 2.06 (1.25–3.39) | 1.10 (0.63–1.92) |
| DM | |||||
| No | 65 | 89731 | 7.24 | Ref | Ref |
| Yes | 22 | 11294 | 19.5 | 2.79 (1.72–4.53) | 1.66 (0.98–2.79) |
| Epilepsy | |||||
| No | 85 | 100180 | 8.48 | Ref | Ref |
| Yes | 2 | 845 | 23.7 | 2.84 (0.70–11.5) | 1.44 (0.33–6.18) |
| Hypertension | |||||
| No | 47 | 73007 | 6.44 | Ref | Ref |
| Yes | 40 | 28019 | 14.3 | 2.33 (1.52–3.56) | 1.33 (0.81–2.20) |
| Osteoporosis | |||||
| No | 81 | 96345 | 8.41 | Ref | Ref |
| Yes | 6 | 4680 | 12.8 | 1.58 (0.69–3.61) | 0.91 (0.37–2.20) |
| Stroke | |||||
| No | 77 | 98853 | 7.79 | Ref | Ref |
| Yes | 10 | 2173 | 46.0 | 6.24 (3.22–12.1) | 3.34 (1.62–6.87) |
| ESRD | |||||
| No | 86 | 100555 | 8.55 | Ref | Ref |
| Yes | 1 | 471 | 21.25 | 2.53 (0.35–18.2) | 0.99 (0.13–7.29) |
| HBV infection | |||||
| No | 78 | 92224 | 8.46 | Ref | Ref |
| Yes | 9 | 8801 | 10.23 | 1.26 (0.63–2.52) | 0.55 (0.24–1.26) |
| HCV infection | |||||
| No | 75 | 97930 | 7.66 | Ref | Ref |
| Yes | 12 | 3095 | 38.77 | 5.38 (2.92–9.93) | 2.64 (1.21–5.76) |
| Steroid | |||||
| No | 36 | 46846 | 7.68 | Ref | Ref |
| Yes | 51 | 54180 | 9.41 | 2.88 (1.70, 4.90) | 0.91 (0.57, 1.45) |
PYs: person-years; Rate: incidence rate, per 10000 person-years; ref: reference for baseline. CI: confidence interval; CAD: coronary artery disease; DM: diabetes mellitus; ESRD: end-stage renal disease; HBV: hepatitis B virus; HCV: hepatitis C virus infection.