Table V.

Delta gain by sex following total hip arthroplasty and total knee arthroplasty second-side surgeries.

Variable	Delta 1	Delta 2	p-value*
Pain score
THA, median (IQR)
Male	3 (2.5 to 4)	3 (2 to 4)	0.125
Female	3 (2.75 to 4)	3 (2 to 4)	0.255
p-value female vs male*	0.653	0.855
TKA, median (IQR)
Male	3 (2 to 4)	2 (1 to 3)	0.132
Female	2 (1.75 to 3)	2 (1 to 3)	0.020
p-value female vs male*	0.222	0.338
Oxford Score
THA, mean (SD)
Male	25.4 (9.7)	24.1 (9.4)	0.460
Female	24.7 (11.7)	23.3 (10.2)	0.373
p-value female vs male*	0.965	0.896
TKA, mean (SD)
Male	21.3 (8.1)	21.8 (8.3)	0.652
Female	20.2 (9.1)	16.5 (10.3)	0.001
p-value female vs male*	0.547	0.031

^*Change in pain score reported as median (IQR) analyzed by Mann Whitney U test for non-parametric data, and change in Oxford Knee Scores by mean (SD) analyzed using paired t-test as parametric data.

IQR, interquartile range; SD, standard deviation; THA, total hip arthroplasty; TKA, total knee arthroplasty.