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Table 1 Characteristics of the studies evaluating effects of the GSTM1-null genotypes on bladder carcinogen risk

From: Association of Glutathione S-transferase gene polymorphism with bladder Cancer susceptibility

Author, year Country Ethnicity Source of controls Quality Score Case Control
+ total + total
Bell 1993 USA Overall Population-based 9 111 89 200 85 115 200
Caucasian Population-based   61 39 100 50 50 100
African Population-based   50 50 100 35 65 100
Daly 1993 UK Caucasian Population-based 4 45 8 53 31 27 58
Zhong 1993 UK Caucasian Hospital-based 4 39 58 97 94 131 225
Lin 1994 USA, etc Overall Population-based 6 61 46 107 442 473 915
Caucasian Population-based   52 37 89 236 243 479
Asian Population-based   5 1 6 179 170 349
African Population-based   4 8 12 27 60 87
Okkels 1996 Denmark Caucasian Hospital-based 7 133 100 233 100 100 200
Anwar 1996 Egypt African Population-based 9 19 3 22 10 11 21
Brockmoller 1996 Germany Caucasian Hospital-based 8 217 157 374 192 181 373
Lafuente 1996 Egypt African Population-based 5 39 27 66 28 27 55
Katoh 1998 Japan Asian Hospital-based 9 66 46 112 50 62 112
Abdel-Rahman 1998 Egypt African Hospital-based 8 26 11 37 15 19 34
Salagovic 1999 Slovakia Caucasian Hospital-based 6 40 36 76 123 125 248
Mungan 2000 Netherlands Caucasian Hospital-based 4 38 23 61 30 39 69
Peluso 2000 Italy Caucasian Hospital-based 5 61 69 130 29 25 54
Schnakenberg 2000 Germany Caucasian Population-based 6 93 64 157 129 94 223
Steinhoff 2000 Germany Caucasian Hospital-based 7 80 55 135 57 70 127
Georgiou 2000 Greece Caucasian Hospital-based 6 56 33 89 56 91 147
Kim 2000 Korea Asian Hospital-based 6 78 34 112 128 97 225
Toruner 2001 Turkey Asian Hospital-based 8 75 46 121 55 66 121
Aktas 2001 Turkey Asian Population-based 4 56 47 103 70 132 202
Giannakopoulos 2002 Greece Caucasian Hospital-based 6 56 33 89 56 91 147
Kim 2002 Korea Asian Population-based 8 138 78 216 265 184 449
Lee 2002 Korea Asian Hospital-based 8 149 83 232 86 79 165
Ma 2002 China Asian Population-based 8 180 137 317 99 83 182
Schroeder 2003 USA Mix Hospital-based 8 137 93 230 101 112 213
Jong 2003 Korea Asian Population-based 9 75 51 126 99 105 204
Moore 2004 USA Mix Population-based 8 54 52 106 49 60 109
Srivastava 2004 India Asian Hospital-based 7 42 64 106 54 128 182
Hung 2004 France Caucasian Hospital-based 7 132 69 201 112 102 214
Saad 2005 UK Caucasian Population-based 8 45 27 72 40 41 81
Srivastava 2005 India Asian Population-based 10 140 230 370 43 63 106
Sobti 2005 India Asian Population-based 9 37 63 100 24 52 76
Garcia-Closas 2005 Spain Caucasian Hospital-based 9 716 422 1138 571 561 1132
Karagas 2005 USA Mix Population-based 9 210 134 344 309 233 542
Kim 2005 Korea Asian Hospital-based 7 92 61 153 73 80 153
McGrath 2006 USA Mix Population-based 11 109 82 191 483 439 922
Ouerhani 2006 Tunisia African Population-based 6 39 23 62 36 43 79
Murta-Nascimento 2007 Spain Caucasian Hospital-based 8 428 251 679 367 368 735
Moore 2007 Spain Caucasian Hospital-based 7 683 394 1077 524 498 1022
Cengiz 2007 Turkey Caucasian Hospital-based 6 34 17 51 22 31 53
Kellen 2007 Belgium Caucasian Population-based 8 312 267 579 597 466 1063
Zhao 2007 USA Caucasian Hospital-based 8 324 298 622 317 316 633
Shao 2008 China Asian Hospital-based 10 85 117 202 81 191 272
Yuan 2008 USA Mix Population-based 11 387 275 662 335 351 686
Covolo 2008 Italy Caucasian Hospital-based 7 128 69 197 111 100 211
Golka 2008 Germany Caucasian Hospital-based 7 184 109 293 88 88 176
Song 2009 China Asian Hospital-based 11 131 77 208 108 104 212
Altayli 2009 Turkey Caucasian Hospital-based 7 58 77 135 65 63 128
Grando 2009 Brazil Mix Population-based 7 40 60 100 33 67 100
Lin 2009 USA Mix Population-based 9 312 292 604 286 324 610
Zupa 2009 Italy Caucasian Population-based 8 13 10 23 68 53 121
Abd 2010 Egypt African Hospital-based 6 11 9 20 9 11 20
Moore 2011 USA Mix Hospital-based 10 653 400 1053 690 545 1235
Öztürk 2011 Turkey Caucasian Population-based 8 98 78 176 51 46 97
Rouissi 2011 Tunisia African Population-based 7 63 62 125 56 69 125
Salinas-Sonchez 2011 Spain Caucasian Hospital-based 5 109 92 201 78 115 193
Goerlitz 2011 Egypt African Hospital-based 9 344 274 618 332 289 621
Marenne 2012 Spain Caucasian Hospital-based 7 488 285 773 402 357 759
Ovsiannikov 2012 Germany Caucasian Hospital-based 6 102 94 196 123 112 235
Schwender 2012 Germany Caucasian Hospital-based 7 909 663 1572 863 876 1739
Henriquez-Hernondez 2012 Spain Caucasian Hospital-based 8 23 67 90 17 64 81
Lesseur 2012 New Hampshire Caucasian Hospital-based 9 378 275 653 508 420 928
Zhang 2012 USA Mix Hospital-based 10 381 329 710 402 380 782
Matic 2013 Serbia Caucasian Hospital-based 8 111 90 201 61 61 122
Savic-Radojevic 2013 Serbia Caucasian Hospital-based 6 45 35 80 32 28 60
Safarinejad 2013 Iran Asian Hospital-based 10 50 116 166 93 239 332
Wang 2013 China Asian Hospital-based 7 699 351 1050 834 570 1404
Berber 2013 Turkey Caucasian Hospital-based 7 54 60 114 51 63 114
Kang 2013 Korea Asian Hospital-based 9 65 45 110 103 117 220
Reszka 2014 Poland Caucasian Population-based 9 149 95 244 165 200 365
Ceylan 2015 Turkey Caucasian Hospital-based 8 22 43 65 31 39 70
Elhawary 2017 Saudi Arabia Asian Hospital-based 7 24 28 52 40 64 104
Ali 2017 Pakistan Asian Population-based 11 83 117 200 57 143 200