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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