Table 11.

Main data of all studies included in the meta-analysis for the -2044A/G polymorphism in IL-13 gene

				Case			Control
Study	Population location	Year	Age	GG	AG	AA	GG	AG	AA	OR	95%CI
Chan, I H[16]	Hong Kong	2008	10.4 ± 3.7	94	136	43	54	70	17	1.18	0.78-1.80
Feng, D[70]	Heilongjiang	2009	3-16	17	18	10	30	10	3	3.80	1.57-9.23
Liu, J L[71]	Guangdong	2004	14-67	27	54	19	44	46	10	2.12	1.17-3.84
Wu, X H[40]	Hubei	2010	8.8	105	111	36	125	84	18	1.72	1.19-2.46
Yang, L F[72]	Gansu	2010	8 ± 4	71	60	47	73	66	19	1.29	0.84-2.00
Zhao, K S[73]	Jilin	2005	1.5-14	18	60	52	8	42	50	0.54	0.23-1.30
Wang, J Y[27]	Taiwan	2009	7.82 ± 3.81	203	194	49	212	234	59	0.87	0.67-1.12
Xi, D[74]	Hubei	2004	≥20	15	24	6	23	20	3	2.08	1.28-3.38
Xi, D[74]	Hubei	2004	≥4	10	25	8	16	13	2	3.52	1.30-9.55