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Table 2 Genotype and allele counts for the ERα Xba I polymorphism in the included studies

From: Association between polymorphisms in the estrogen receptor alpha gene and osteoarthritis susceptibility: a meta-analysis

Group Study Country OA site X (G) x (A) xx (AA) Xx (AG) XX (GG)
     OA Control OA Control OA Control OA Control OA Control
European Barton L. Wise et al. USA Hand 202 159 412 269 148 85 116 99 43 30
John Loughlin et al. UK Hip,Knee 256 251 486 487 164 161 158 165 49 43
K. Lian M.D. et al. USA Hip 374 2914 764 5332 257 1700 250 1932 62 491
European Total     832 3324 1662 6088 569 1946 524 2196 154 564
Asian Sheng-Yu Jin et al. Korea Knee 57 156 245 638 98 256 49 126 4 15
Toshio Ushiyama et al. Japan Hand 30 116 100 520 36 211 28 98 1 9
V. M. Borgonio-Cuadra et al. Mexico Knee 49 63 181 171 70 62 41 47 4 8
  Zhi Tian et al. China Knee 24 47 52 33 18 6 16 21 4 13
  Jiexiang Yang et al. China Knee 15 19 67 61 28 24 11 13 2 3
  Yan Xue et al. China Knee 44 200 66 162 21 40 24 82 10 54
  Xiaoyu Dai et al. China Knee 210 193 728 851 288 348 152 155 29 19
Asian Total     429 794 1439 2436 559 947 321 542 54 121
Total     1261 4118 3101 8524 1128 2893 845 2738 208 685