TABLE I.

Predictors of Subsequent Arthroplasty Among 1,933 Patients Following Primary Total Hip Arthroplasty

	Hazard Ratio*	P Value
Contralateral total hip arthroplasty
Age	0.98 (0.98 to 0.99)	<0.0001
Male sex	1.00 (0.85 to 1.26)	0.70
Calendar year	0.99 (0.98 to 0.99)	0.006
Ipsilateral total knee arthroplasty
Age	0.99 (0.96 to 1.02)	0.41
Male sex	0.55 (0.25 to 1.20)	0.13
Calendar year	0.98 (0.95 to 1.01)	0.23
Contralateral total knee arthroplasty
Age	1.00 (0.98 to 1.02)	0.99
Male sex	0.79 (0.49 to 1.27)	0.32
Calendar year	0.99 (0.97 to 1.01)	0.43

^*The values are given as the hazard ratio, with the 95% CI in parentheses.