Table 15.

Main data of all studies included in the meta-analysis for the -509C/T polymorphism in TGF-β1 gene

				Case			Control
Study	Population location	Year	Age	CC	CT	TT	CC	CT	TT	OR	95%CI
Lu, J R[85]	Jilin	2004	1-13	45	38	15	30	19	3	1.61	0.81-3.17
Mak, J C[86]	Hong Kong	2006	41.0 ± 16.1	46	109	93	51	155	102	0.87	0.56-1.35
Xia, W[87]	Jiangxi	2006	15-60	22	26	12	17	11	2	2.26	0.92-5.52