Table 3.

Linear regression analysis based on cobalt ion concentration

Factor	Odds ratio	CI	p value
BMI	0	−0.14 to 0.15	0.950
Age at the time of surgery	0.02	-0.01 to 0.01	0.619
Cup inclination	0.19	0.06 to 0.32	0.050
Cup size	−0.006	−0.03 to 0.01	0.486
Shaft angle	−0.006	−0.01 to 0	0.065
Sex	−0.032	0.53 to 3.6	0.661
UCLA activity	−0.026	−0.06 to 0.01	0.157