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Table 3 (a) Hazard ratios of the risk factors associated with death from cause-specific hazard model based on multivariate Cox’s model, (b) subdistribution hazard ratio of the risk factors associated with the first reoperation, and (c) first readmission based on multivariate Fine and Gray’s (subdistribution hazard ratio, sHR) model from competing risk analysis

From: Primary hemiarthroplasty after unstable trochanteric fracture in elderly patients: mortality, readmission and reoperation

   (a) Death (b) Reoperation (c) Readmission
HR 95% C.I. P-value sHR 95% C.I. P-value sHR 95% C.I. P-value
Age (year)   1.056 (1.047–1.064) < 0.001 0.986 (0.974–0.998) 0.025 1.024 (1.016–1.032) < 0.001
Gender Female Ref.b    Ref.    Ref.   
Male 1.315 (1.166–1.482) < 0.001 0.966 (0.770–1.213) 0.768 0.951 (0.829–1.090) 0.468
CCIa 0 Ref.    Ref.    Ref.   
1 1.139 (1.123–1.548) < 0.001 1.038 (0.797–1.351) 0.784 1.365 (1.172–1.590) < 0.001
2 1.693 (1.404–2.041) < 0.001 0.898 (0.634–1.270) 0.542 1.684 (1.388–2.044) < 0.001
3 1.766 (1.445–2.159) < 0.001 1.087 (0.764–1.547) 0.642 1.656 (1.320–2.077) < 0.001
≥ 4 2.432 (2.070–2.856) < 0.001 0.886 (0.648–1.210) 0.447 2.103 (1.752–2.524) < 0.001
Insurance amount (NT$) ≤ 21,000 Ref.    Ref.    Ref.   
>  21,000 0.487 (0.425–0.557) < 0.001 1.174 (0.950–1.450) 0.138 0.912 (0.803–1.036) 0.158
  1. Note: a CCI Charlson Comorbidity Index
  2. b Ref. Reference