Table 4.

Estimated subhazard of revision for total knee replacement—competing risks analysis

	Univariable			Adjusted*
	HR	95% CI	p Value	HR	95% CI	p Value
BMI† (kg/m2) (per additional unit)	1.026	(1.013 to 1.038)	<0.001	1.015	(1.002 to 1.028)	0.023
Gender
Female (reference)	1.00			1.00	(1.32 to 1.73)	<0.001
Male	1.54	(1.37 to 1.72)	<0.001	1.51
Age (years at THR) (per additional year)	0.957	(0.952 to 0.961)	<0.001	0.957	(0.951 to 0.962)	<0.001

*Adjusted for smoking (yes/no/ex), drinking (yes/no/ex), number of comorbid conditions.

†BMI available in 80.9% of patients.

BMI, body mass index; THR, total hip replacement.