Table 4

Cox proportional hazards model results with joints censored initially for all-cause revision, then for ‘bearing failure’ and ‘taper failure’

	HR	Pr > χ²	Lower 95% CI	Upper 95% CI
Proportional hazards model for all-cause revision (N=489)
Bilaterality	2.408	<0.001	1.478	3.925
Liner size	0.862	0.070	0.733	1.012
Surgeon	0.966	0.950	0.559	1.669
Age	0.984	0.229	0.959	1.010
Male sex	1.619	0.167	0.818	3.205
Corail stem	1.596	0.136	0.864	2.950
Early cohort	0.096	0.002	0.022	0.424
Proportional hazards model for revision associated with bearing failure (N=407)
Bilaterality	1.837	0.162	0.783	4.306
Liner size	0.744	0.028	0.572	0.968
Surgeon	0.742	0.498	0.337	1.815
Age	0.980	0.130	0.959	1.005
Male sex	0.922	0.889	0.690	2.967
SROM stem	0.901	0.866	0.266	3.045
Early cohort	0.041	0.003	0.005	0.327
Proportional hazards model for revision associated with taper failure (N=399)
Bilaterality	2.869	0.009	1.290	6.295
Liner size	0.936	0.530	0.760	1.152
Surgeon	0.888	0.793	0.366	2.154
Age	0.980	0.980	0.940	1.023
Male sex	0.615	0.401	0.198	1.910
SROM stem	1.523	0.45	0.505	4.593
Early cohort	0.936	0.033	0.760	1.152