Table 1. Clinical characteristics of the study population.

Variable	HSCR (n = 80)	Control (n = 80)	P
Age(months, mean, SE)	4.25(0.30)	4.77(0.83)	0.57a
Sex
Male	70	55	0.17b
Female	10	25
Disease Classifcation
S-HSCR	29
L-HSCR	51

^aStudent t-test

^bTwo-sided χ² test.

S-HSCR: Short-segment HSCR; L-HSCR: Long-segment HSCR.