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Table 1 Characteristics of all studies included in this meta-analysis

From: Association between KIF6 rs20455 polymorphism and the risk of coronary heart disease (CHD): a pooled analysis of 50 individual studies including 40,059 cases and 64,032 controls

Author

Year

Country

Ethnicity

Control source

Case

Control

Case

Control

P HWE

AA

AG

GG

AA

AG

GG

Berglund et al.

1993

Sweden

Caucasian

PB

86

99

35

38

13

33

54

12

Yes

Vartiainen et al.

2000

Finland

Caucasian

PB

167

172

64

81

22

73

76

23

Yes

Senti et al.

2001

Spain

Caucasian

PB

312

317

134

139

39

141

137

39

Yes

Yusuf et al.

2004

Several

Asian

PB

1092

1187

351

498

243

389

531

267

Yes

Low et al.

2005

USA

Caucasian

HB

204

260

89

86

29

114

111

35

Yes

Helgadottir et al.1

2007

USA

Caucasian

PB

875

447

370

399

106

174

221

52

Yes

Helgadottir et al.2

2007

USA

Caucasian

PB

933

468

359

441

133

194

213

61

Yes

Samani et al.1

2007

Germany

Caucasian

PB

1126

1277

447

529

150

522

593

162

Yes

Samani et al.2

2007

Germany

Caucasian

PB

722

1643

293

328

101

662

753

228

Yes

Meng et al.

2008

Ireland

Caucasian

FB

482

622

203

226

53

261

292

69

Yes

Meiner et al.

2008

USA

Caucasian

PB

505

559

187

228

90

216

260

83

Yes

Serre et al.

2008

Several

Mixed

PB

789

859

335

337

117

354

402

103

Yes

Morgan et al.

2008

USA

Caucasian

HB

807

637

322

377

108

256

304

77

Yes

Assimes et al.

2008

USA

Caucasian

PB

505

514

162

187

83

144

183

130

Yes

Vennemann et al.

2008

Germany

Caucasian

PB

793

1121

311

379

103

430

528

163

Yes

Sutton et al.

2008

USA

Caucasian

FB

1575

970

545

570

183

297

347

86

Yes

Martinelli et al.

2008

Italy

Caucasian

PB

1106

383

437

501

168

145

191

47

Yes

Iakoubova et al.

2008

Scottland

Caucasian

PB

481

1080

104

137

35

256

204

59

Yes

Stewart et al.

2009

Canada

Caucasian

HB

1540

1455

183

695

662

205

616

634

Yes

Luke et al.

2009

Austria

Caucasian

HB

505

782

73

254

178

102

373

307

Yes

Bare et al.

2010

Costa Rican

Caucasian

PB

1987

2147

785

952

250

896

966

285

Yes

Assimes et al.1

2010

U.S.A

Mixed

PB

505

514

192

220

93

161

213

140

Yes

Assimes et al.2

2010

Germany

Caucasian

HB

793

1121

311

379

103

430

528

163

Yes

Assimes et al.3

2010

U.S.A

Mixed

HB

1575

970

561

670

344

306

433

231

Yes

Assimes et al.4

2010

Iceland

Caucasian

PB

4313

24,952

2131

1779

403

11,813

10,689

2450

Yes

Assimes et al.5

2010

Finland

Caucasian

PB

167

172

64

81

22

73

76

23

Yes

Assimes et al.6

2010

U.S.A

Mixed

FB

378

2652

108

182

88

679

1105

868

Yes

Assimes et al.7

2010

Germany

Caucasian

PB

722

1643

293

328

101

662

753

228

Yes

Assimes et al.8

2010

Germany

Caucasian

HB

1126

1277

447

529

150

522

593

162

Yes

Assimes et al.9

2010

U.S.A

Caucasian

CB

505

559

187

228

90

216

260

83

Yes

Assimes et al.10

2010

Mixed

Caucasian

H-CB

789

859

335

337

117

354

402

103

Yes

Assimes et al.11

2010

Mixed

Asian

H-CB

1092

1187

351

498

243

389

531

267

Yes

Assimes et al.12

2010

Ireland

Caucasian

FB

482

622

203

226

53

261

292

69

Yes

Assimes et al.13

2010

Sweden

Caucasian

PB

86

99

35

38

13

33

54

12

Yes

Assimes et al.14

2010

U.S.A

Caucasian

HB

875

447

370

399

103

174

221

52

Yes

Assimes et al.15

2010

U.S.A

Caucasian

HB

204

260

89

86

29

114

111

35

Yes

Assimes et al.16

2010

U.S.A

Caucasian

HB

807

637

322

377

108

256

304

77

Yes

Assimes et al.17

2010

U.S.A

Caucasian

HB

933

468

359

441

133

194

213

61

Yes

Assimes et al.18

2010

Spain

Caucasian

CB

312

317

134

139

39

141

137

39

Yes

Assimes et al.19

2010

Italy

Caucasian

HB

1106

383

437

501

168

145

191

47

Yes

Assimes et al.20

2010

U.K.

Caucasian

CB

1922

2933

792

890

240

1242

1299

392

Yes

Bhanushali et al.

2011

India

Asian

HB

227

150

70

111

46

33

80

37

Yes

Peng et al.

2012

China

Asian

HB

289

522

69

149

71

139

262

121

Yes

Wu et al.1

2012

China

Asian

HB

356

568

104

164

88

168

268

132

Yes

Wu et al.2

2012

China

Asian

HB

114

568

16

68

30

168

268

132

Yes

Wu et al.

2014

China

Asian

HB

288

346

74

141

73

101

166

79

Yes

Hamidizadeh et al.

2015

Iran

Caucasian

HB

100

100

35

48

17

63

27

10

No

Vishnuprabu et al.

2015

India

Asian

HB

510

532

107

252

151

121

251

160

Yes

Hubacek et al.

2016

Czech

Caucasian

HB

1889

1191

691

856

302

440

543

195

Yes

Vatte et al.

2016

Saudi Arabia

Asian

HB

1002

984

277

513

212

286

464

234

Yes

  1. 1–20: represents different studies in one publication; HB hospital based study, PB population based study, FB family based study, CB community based study, H-CB hospital and community based study, HWE Hardy-Weinberg equilibrium. Mix: the original studies didn’t clarify the race of the subjects or mixed races