Ceramic-on-ceramic vs ceramic-on-polyethylene, a comparative study with 10-year follow-up

Table 2 Potential predictive values for polyethylene wear in beta-coefficient (range)

Potential predictive factors for PE wear	Beta-coefficient (95%CI)	P value
Gender	0.06 (-1.18; 1.29)	0.93
Age	-0.01 (-0.10; 0.08)	0.82
Operation side	-0.40 (-1.53; 0.73)	0.46
BMI	-0.05 (-0.20; 0.10)	0.46
Diagnosis, primary OA vs other	1.10 (-0.42; 2.61)	0.14
Cup size	-0.06 (-0.23; 0.12)	0.52
Cup inclination	0.08 (0.02; 0.15)	0.02

BMI: Body mass index; CI: Confidence interval; OA: Osteoarthritis; PE: Polyethylene.