Relationship between IFN-γ gene polymorphism and susceptibility to intrauterine HBV infection

Table 5 IFN-γ CA repeat times in patients and control

IFN-γ CArepeat	Group 1	Group II	χ2	P
	(84)	(136)
	% (n)	% (n)
11	1.19 (1)	0.74 (1)	0.119	0.7302
12	25 (21)	43.38 (59)	7.548	0.00601
13	13.10 (11)	8.82 (12)	1.008	0.3155
14	40.48 (34)	33.82 (46)	0.989	0.3201
15	13.10 (11)	7.35 (10)	1.974	0.1600
16	4.76 (4)	3.68 (5)	0.155	0.6936
17	2.38 (2)	2.21 (3)	0.007	0.9327

¹ Significant difference between patients and controls. Group I: the intrauterine HBV infection group; Group II: the normal immune children group.