Approach | Minimally invasive procedure used | (i) With covariate adjustment for sex, age, ASA, year of primary, fixation, mechanical and chemical thromboprophylaxis, anaesthetic group and Charlson comorbidity subgroups, stratified by ‘risk group’ (n = 578,624 with complete information; 2205 deaths) hazard rate ratio [95%CI] | (ii) With covariate adjustment for sex, age, ASA, year of primary, fixation, mechanical and chemical thromboprophylaxis, anaesthetic group, Charlson comorbidity subgroups and quintile of area deprivation, stratified by ‘risk group’ (n = 572,719 with complete information; 2192 deaths) hazard rate ratio [95%CI] | (iii) With covariate adjustment for sex, age, ASA, year of primary, fixation, mechanical and chemical thromboprophylaxis, anaesthetic group, Charlson comorbidity subgroups, quintile of area deprivation and BMI subgroup, stratified by ‘risk group’ (n = 359,883 with complete information; 1148 deaths) hazard rate ratio [95%CI] |
Posterior | No | 1 [referent] | 1 [referent] | 1 [referent] |
Posterior | Yes | 0.94 [0.69–1.28] P = 0.705 | 0.94 [0.69–1.28] P = 0.678 | 0.86 [0.56–1.33] P = 0.499 |
Lat/Ant-Lat/Hard | No | 1.13 [1.04–1.24] P = 0.007 | 1.12 [1.02–1.23] P = 0.013 | 1.16 [1.02–1.31] P = 0.022 |
Lat/Ant-Lat/Hard | Yes | 0.89 [0.59–1.34] P = 0.579 | 0.88 [0.59–1.33] P = 0.555 | 0.81 [0.42–1.57] P = 0.539 |
Ant/Other | No | 0.96 [0.76–1.21] P = 0.726 | 0.96 [0.76–1.21] P = 0.706 | 0.90 [0.64–1.27] P = 0.549 |
Ant/Other | Yes | 1.29 [0.64–2.59] P = 0.473 | 1.32 [0.66–2.65] P = 0.435 | 1.10 [0.35–3.42] P = 0.872 |
Trans-trochanteric | No | 1.15 [0.77–1.73] P = 0.486 | 1.15 [0.77–1.71] P = 0.506 | 1.16 [0.54–2.50] P = 0.701 |
Additional pairwise comparisons: | ||||
Lat/Ant-Lat/Hard | No vs Yes | P = 0.247 | P = 0.253 | P = 0.296 |
Ant/Other | No vs Yes | P = 0.425 | P = 0.386 | P = 0.741 |