Table 6.

Cox regression results for reverse hybrid brand combinations compared to cemented THAs with follow-up of more than 5 years, and with adjustment for age, sex, and diagnosis

Prosthesis cup/stem	Total n	Revised n	RR	95% CI	p-value	At 8 years n	At 10 years n
Cemented THA	155,845	2,825	1			90,886	52,447
Elite/Corail	1,818	11	0.4	0.2–0.7	0.02	426	168
Titan/Corail	499	7	0.6	0.3–1.3	0.2	239	107
Kronos/Corail	369	2	0.3	0.1–1.4	0.1	74	30
Reflection all-poly/Corail	628	25	2.0	1.4–3.1	< 0.001	217	88
Contemporary/ABG II HA	311	2	0.5	0.1–1.8	0.3	51	–