. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: Knee Surg Sports Traumatol Arthrosc. 2013 Oct 23;23(7):2106–2114. doi: 10.1007/s00167-013-2713-7

Table 3.

Hip abduction strength by level of experience and comparison between groups

Variable	Side	Group				p value comparing groups^*
		GS/MS group (n = 61)	HS group (n = 54)	COL group (n = 20)	PRO group (n = 34)	p value comparing groups^*
Gluteal strength in neutral, median (IQR)	Preferred	4 [4, 5]	4 [3, 5]	4 [3, 4]	5 [4, 5]	<0.0001^‡ GS/MS versus COL, p = 0.001 HS/MS versus PRO p = 0.02 COL versus PRO p = 0.0004
	Non- preferred	4 [4, 5]	4 [3, 5]	4 [4, 4]	5 [4, 5]	0.009 HS versus PRO, p = 0.03 COL versus PRO p = 0.01
	Difference	0 [0, 0]	0 [0, 0]	0 [−2, 0]	0 [0, 0]	0.002^‡ 10–14 versus COL, p = 0.002
	p value^†	n.s.^‡	n.s.^‡	n.s.^‡	n.s.^‡
Gluteal strength in extension, median (IQR)	Preferred	4 [4, 5]	4 [3, 4]	3 [3, 3]	4 [3, 4+]	<0.0001^‡ GS/MS versus COL, p < 0.0001 HS versus COL, p = 0.003 COL versus PRO, p = 0.008
	Non- preferred	4 [4, 5]	4 [3, 4]	3 [3, 4]	4 [3, 5]	0.007^‡ GS/MS versus COL, p = 0.01 COL versus PRO, p = 0.03
	Difference	0 [0,0]	0 [0,0]	0 [−2, 0]	0 [0,0]	0.02^‡
	p value^†	n.s.^‡	n.s.^‡	n.s.^‡	n.s.^‡

Data are mean ± standard deviation or median [interquartile range]

GS/MS grade school/middle school, HS high school, COL collegiate, PRO professional

p value compares groups by ANOVA. When the overall model is significant (p < 0.05), pairwise between-group comparisons were performed by Tukey-Kramer method. Significant pairwise comparisons are reported

^†

p value compares the preferred to the non-preferred side within group by paired t test

^‡

Analysis performed using rank-transformed data