Table III.

Comparisons of change in function, activity level and self-report of pain between groups

Variable	Time Point	THA alone group (N=3134 observations‡)	THA+LSD group (N=712 observations‡)	P-value *
Self Report of Pain	preop postop change P-value within group†	7.55 ± 2.1 1.40 ± 2.2 −6.15 ± 2.9 <0.0001	7.73 ± 2.1 2.23 ± 2.8 −5.50 ± 3.3 <0.0001	<0.0001
Harris Hip Score, Surgical side	preop postop change P-value within group†	49.4 ± 16 85.8 ± 16 36.4 ± 18 <0.0001	46.6 ± 14 79.0 ± 19 32.4 ± 21 <0.0001	<0.0001
UCLA	preop postop change P-value within group†	4.02 ± 2.2 5.82 ± 2.2 1.80 ± 2.3 <0.0001	3.49 ± 1.9 4.77 ± 2.0 1.29 ± 2.2 <0.0001	<0.0001

Change = post-surgery score – pre-surgery score. Data are mean ± standard deviation. Post-surgery data is from 1 year follow-up

^*P-value associated with change from pre-surgery to post-surgery between groups by Generalized Estimating Equations( GEE.)

^†P-value associated with change from preop to postop within group by GEE.

^‡Maximum sample size available per group and includes bilateral THA