Table 1. Comparisons of Age, Sex, and Mean Course of Disease Before Enrollment and Levels of IL-7 Among Groups A, B, and C.

Group	No. of Cases	IL-7, ng/L	Male/Female	Age, y (Mean ± SD)	Course of Disease, y (Mean ± SD)
A	31	20.85 ± 5.24	22/9	36.10 ± 8.20	5.06 ± 2.98
B	30	25.89 ± 7.55	21/9	36.07 ± 12.97	4.63 ± 2.74
C	30	30.34 ± 3.05	22/8	36.27 ± 12.20	4.53 ± 2.96
F/χ 2 Value		22.050	χ2 = 0.087	0.003	0.292
P Value		< 0.01	> 0.05	> 0.05	> 0.05