TABLE II.

Results of Cox Regression Analysis of Revisions According to Their Causes and Bearing Combination Adjusted for Age and Sex

	HR (95% CI)
	CoC	CoP	CoXLPE	MoXLPE	CMoXLPE	MoP
All revisions	0.82 (0.77, 0.88)	0.80 (0.72, 0.88)	0.67 (0.61, 0.73)	0.82 (0.77, 0.88)	0.65 (0.54, 0.79)	1.0 (reference)
Aseptic loosening	0.65 (0.58, 0.73)	0.77 (0.64, 0.92)	0.46 (0.38, 0.55)	0.55 (0.49, 0.63)	0.34 (0.21, 0.56)	1.0 (reference)
Wear	0.38 (0.29, 0.51)	0.68 (0.48, 0.95)	0.36 (0.24, 0.55)	0.40 (0.30, 0.53)	0.59 (0.26, 1.35)	1.0 (reference)
All reasons but aseptic loosening and wear	0.92 (0.85, 1.00)	0.79 (0.69, 0.90)	0.78 (0.70, 0.86)	0.95 (0.88, 1.03)	0.77 (0.62, 0.96)	1.0 (reference)
Infection	0.76 (0.64, 0.90)	0.69 (0.52, 0.92)	0.84 (0.69, 1.02)	1.07 (0.91, 1.25)	0.68 (0.42, 1.09)	1.0 (reference)
Dislocation	0.43 (0.37, 0.49)	0.81 (0.67, 0.98)	0.49 (0.42, 0.59)	0.61 (0.54, 0.69)	0.51 (0.35, 0.76)	1.0 (reference)
Periprosthetic fracture	0.95 (0.81, 1.13)	0.62 (0.46, 0.84)	0.93 (0.76, 1.14)	1.14 (0.99, 1.31)	0.95 (0.61, 1.48)	1.0 (reference)
Pain	0.83 (0.70, 0.98)	0.85 (0.66, 1.10)	0.48 (0.37, 0.62)	0.62 (0.52, 0.74)	0.43 (0.23, 0.81)	1.0 (reference)
Implant fracture	5.60 (3.75, 8.36)	1.65 (0.90, 3.03)	1.04 (0.56, 1.95)	1.38 (0.87, 2.19)	1.48 (0.45, 4.89)	1.0 (reference)