Table 2.

Summary of the results of functional testing.

Test	All (N=167)	Attrited (N=53)	Not attrited (N=114)	p-Value	95% CI of mean difference
UQYBT* mean (SD)	36.9 (5.9)	36.4 (6.6)	37.2 (5.6)	0.391	−1.1–2.81
mRT** mean (SD)	18.8 (11.7)	14.6 (8.3)	20.8 (12.6)	0.001	2.46–9.94

^*UQYBT – Upper Quadrant Y-Balance Test.

Composite score is calculated as the average of all 18 trials (three trials per direction, three directions for each side) divided by the subject’s height;

^**mRT – modified Rangers Test, repetitions completed.