Table 1.

A comparison of baseline characteristics between groups.

Variable	Radiograph overlay, N = 94	Transverse rod, N = 106	P-value
Age (years)a	62.9 (11.8)	65.1 (9.8)	.147
Female genderc	45.7% (43)	47.2% (50)	.840
BMI (kg/m2)a	29.8 (5.9)	29.2 (5.9)	.461
Charlson scoreb	1 (0-2)	0 (0-1)	.133
Contralateral arthroplastyc	13.8% (13)	40.6% (43)	<.001

BMI, body mass index.

^aStudent t-test, mean (standard deviation).

^bWilcoxon rank-sum test, median (interquartile range).

^cChi-squared analysis, % (n).