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Table 1 Information for studies included in this meta-analysis

From: Association between insulin receptor substrate 1 gene polymorphism rs1801278 and gestational diabetes mellitus: an updated meta- analysis

Author

Year

Country

Definition for GDM

Sample size

 

Case

 

Control

NOS score

HWE

Case

Control

CC

CT

TT

C

T

CC

CT

TT

C

T

Alharbi, et al. 1

2014

Saudi

OGTT confirmed

200

300

 

189

10

1

388

12

 

295

5

0

595

5

6

0.022

Pappa, et al. 1

2011

Greece

Fourth IWCGDM criteria

148

107

 

58

73

17

189

107

 

60

40

7

160

54

8

0.682

Tok, et al. 1

2006

Turkey

NDDG criteria

62

100

 

53

9

0

115

9

 

89

11

0

189

11

6

0.402

Fallucca, et al. 1

2006

Italy

OGTT confirmed

309

277

 

271

34

4

576

42

 

255

22

0

532

22

8

0.071

Shaat, et al. 1

2005

Sweden

EASD-DPSG criteria

588

1189

 

534

49

4

1117

57

 

1078

111

0

2267

111

8

0.986

Popova, et al. 2

2021

Russians

IADPSG criteria

319

318

 

292

27

0

611

27

 

284

34

0

602

34

6

0.204

Wu, et al. 2

2021

Chinese

IADPSG criteria

213

191

 

205

8

0

418

8

 

184

7

0

375

7

6

0.704

Popova, et al. 2

2017

Russians

IADPSG criteria

278

179

 

257

21

0

535

21

 

160

19

0

339

19

6

0.328

  1. Note: 1: those articles were included in previous meta- analysis; 2: those articles were not included in previous meta- analysis. OGTT: the oral glucose tolerance test; IADPSG: the International Association of Diabetes in Pregnancy Study Groups; EASD-DPSG: the European Association for the Study of Diabetes-Diabetic Pregnancy Study Group; IWCGDM: International Workshop-Conferences on Gestational Diabetes Mellitus; NDDG: National Diabetes Data Group criteria