Table 1

Main characteristics of these studies included in this meta-analysis
First author [Reference] Year Ethnicity Sample size Source of control Cases Controls HWE
Ala/Ala Ala/Val Val/Val Ala/Ala Ala/Val Val/Val
case control
Kimura [15] 2001 Caucasian 165 150 HB 70 80 15 65 73 12 0.17
Sanyal [16] 2004 Caucasian 309 246 PB 173 113 23 121 102 23 0.82
Lin 1[17] 2004 Caucasian 410 410 PB 176 183 51 196 164 50 0.09
Moore [18] 2004 Caucasian 106 109 PB 45 42 19 32 59 18 0.29
Lin 2[17] 2004 Mixed 17 17 PB 16 1 0 13 4 0 0.58
Lin 3[17] 2004 African 21 21 PB 7 13 1 9 9 3 0.76
Karagas [19] 2005 Caucasian 352 551 PB 140 171 39 227 245 71 0.70
Moore [20] 2006 Asian 1041 1049 PB 418 478 145 402 486 161 0.48
Ouerhani [21] 2007 African 111 131 HB 43 58 10 58 56 17 0.55
Wang [22] 2009 Asian 239 250 PB 66 129 45 88 132 30 0.07
Ouerhani [23] 2009 African 90 110 HB 33 50 7 51 45 14 0.42
Rouissi [24] 2009 African 185 191 HB 87 86 12 81 90 20 0.49
Cai [25] 2009 Asian 312 325 HB 82 169 61 113 170 42 0.08
Safarinejad [26] 2011 Asian 158 316 HB 67 74 17 144 142 30 0.56
Izmirli [27] 2011 Asian 54 50 HB 28 22 4 36 14 0 0.25

HB:Hospital-Based Study. PB: Population-Based Study. HWE: Hardy–Weinberg equilibrium. 1,2,3: Different descent populations in one publication.

Xu et al.

Xu et al. Diagnostic Pathology 2013 8:95   doi:10.1186/1746-1596-8-95

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