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Table 7 Main data of all studies included in the meta-analysis for the -308A/G polymorphism in TNF-α gene

From: Asthma susceptible genes in Chinese population: A meta-analysis

     Case Control   
Study Population location Year Age GG GA AA GG GA AA OR 95%CI
Gao, J M[48] Beijing 2003 38.7 ± 13.8 47 52 26 44 41 11 1.40 0.82-2.41
Guo, Y L[49] Jiangxi 2004 - 4 28 16 7 11 3 5.50 1.40-21.60
Li, Z F[50] Guangdong 2003 2-12 9 16 5 14 10 2 2.72 0.91-8.16
Liu, R M[51] Hubei 2004 2-15 98 15 0 104 22 0 0.72 0.36-1.47
Mak, J C[38] Hong Kong 2007 42.4 ± 16.1 244 47 1 250 40 2 1.17 0.75-1.84
Tan, E C[52] Singapore 1999 - 49 18 0 115 36 0 1.17 0.61-2.26
Wang, T N[53] Taiwan 2004 5-18 140 49 2 111 18 0 2.25 1.24-4.06
Zhai, F Z[54] Shandong 2004 35.80 ± 10.18 44 14 6 67 12 1 2.34 1.06-5.19
Zhao, H J[55] Jilin 2005 - 45 5 0 71 9 0 0.88 0.28-2.78
Wang, J Y[27] Taiwan 2009 7.82 ± 3.81 345 100 3 409 94 7 1.21 0.89-1.65