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Table 2 Characteristics of the primary studies included in the meta-analysis

From: Assisted reproductive technology and the risk of gestational diabetes mellitus: a systematic review and meta-analysis

First author

DOP

Country

Period

Design

Mean of age

Type of ART

# of GDM in ART group

# of GDM in non-ART group

ART

Non-ART

n (GDM)

N (Total)

n (GDM)

N (Total)

Varma TR [30]

1987

UK

1983–1985

Cohort

NA

NA

NA

7

362

67

7284

Vollenhoven B [31]

2000

Australia

1990–1997

Case–Control

NA

NA

OI

22

60

10

60

Bjercke S [32]

2002

Norway

1993–1998

Cohort

31.32

32.7

IVF

4

52

2

355

Koivurova S [33]

2002

Finland

1990–1995

Cohort

31.8

31.8

IVF

12

225

21

671

Nassar AH [34]

2003

USA

1995–2000

Cohort

35

36

IVF

3

56

6

112

Pinborg A [35]

2004

Denmark

1997

Cohort

33.1

30.5

IVF/ICSI

13

236

16

566

Shevell T [36]

2005

USA

1999–2002

Cohort

33.19

29.9

IVF/OI

92

1776

1166

34,286

Saygan-Karamürsel B [21]

2006

Turkey

1999–2003

Case–Control

31.45

28.94

ICSI

22

274

10

348

Buckett WM [37]

2007

Canada

1998–2003

Cohort

34.375

34

IVF/ICSI/IVM

39

344

25

344

Adler-Levy Y [22]

2007

Israel

1988–2002

Case–Control

30.27

29.4

IVF/OI

96

1036

153

3694

Eskandar M [38]

2007

Saudi Arabia

2004–2006

Cohort

28.29

26.44

ICSI

3

35

7

73

Krieg SA [39]

2008

USA

2001–2005

Cohort

42.7

41.3

IVF

10

71

9

108

Vasario E [40]

2010

Italy

2004–2008

Cohort

31.5

33.5

IVF

10

84

13

139

Suzuki S [41]

2010

Japan

2000–2007

Cohort

37.8

37.9

IVF

1

64

1

87

Tepper NK [42]

2011

USA

1997–2004

Cohort

36

30

NA

112

6256

4434

595,168

Montoya JB [43]

2012

Mexico

2005–2009

Cohort

32.5

31.6

NA

7

57

7

57

Moini A [44]

2012

Iran

2008–2010

Cohort

30.6

27.3

IVF/ICSI

21

230

15

170

Bamberg C [45]

2012

Germany

1998–2008

Cohort

32.5

30.1

IVF/ICSI

19

426

26

813

Le Ray C [46]

2012

France

2008–2010

Cohort

>43

>43

IVF/OD

11

144

12

236

Werder E [47]

2013

USA

2002–2008

Cohort

NA

NA

IVF

155

2233

30

299

Wang Y [48]

2013

Australia

2007–2009

Cross–Sectional

NA

NA

NA

1044

13,732

19,333

386,660

Farhi A [49]

2013

Israel

2006–2008

Cohort

  

IVF/ICSI

61

561

59

600

Toshimitsu M [50]

2014

Japan

2006–2010

Cohort

NA

NA

IVF/ICSI

0

116

6

664

Castera D [51]

2014

Italy

2007–2011

Cohort

38.5

33.5

IVF/ICSI

14

138

6

207

Ashrafi M [52]

2014

Iran

2011–2012

Cross–Sectional

30

26.4

IVF

174

468

17

234

Ashrafi M [53]

2014

Iran

2011–2012

Cross–Sectional

30.35

26.6

ICSI/IVF/IUI

13

54

4

20

Silberstein T [54]

2014

Israel

1988–2006

Cohort

30.9

28.49

IVF/OI

492

3268

11,319

171,513

Yang X [55]

2014

China

2011

Cohort

NA

NA

ART

172

1139

5179

111,264

Domingues A [56]

2014

Portugal

1996–2011

Cohort

NA

NA

IVF/ICSI

15

180

31

698

Stern JE [57]

2015

USA

2004–2008

Cohort

NA

NA

NA

81

3689

3363

302,085

Jie Z [58]

2015

China

2010–2013

Cohort

32.53

29.87

 

48

428

190

2788

Nunes F [59]

2015

NA

NA

Case–Control

34.3

31.4

NA

11

77

23

208

Barua S [60]

2016

Australia

2007–2010

Cohort

32.1

29.2

ART

224

1727

3270

48,654

Zhu L [61]

2016

China

2006–2014

Cohort

31.84

31.73

IVF/ICSI

309

2641

342

5282

Martin AS [62]

2016

USA

2008–2012

Cohort

NA

NA

ART

397

14,761

22,925

100,857

Luke B [63]

2016

USA

2004–2010

Cohort

36.65

30.1

ART

93

1338

2951

56,755

Bashmakova NV [64]

2016

Russia

NA

Cohort

NA

NA

ART

12

37

6

96

Rosato E [65]

2016

Italy

2010–2011

Cohort

44.2

44.1

ART

6

72

6

80

Valenzuela-lcaraz B [66]

2016

Spain

2004–2010

Cohort

33.46

31

IVF/ICSI/OI

17

488

4

200

Marton V [67]

2016

Sweden

1994–2014

Cohort

35.25

33.275

IVF/ICSI

54

312

44

912

Beyer DA [68]

2016

German

NA

Cohort

39

39

IVF/ICSI

4

467

161

6417

Pourali L [69]

2016

Iran

2009–2014

Cohort

28.9

27.1

ART

8

31

8

96

Ben-Yaakov RD [70]

2016

Israel

1988–2012

Cohort

30.9

28.7

IVF/OI

585

4153

5895

95,138

Qin J [71]

2016

China

2013–2016

Cohort

31.3

29.26

IVF

165

1260

823

4379

Wang YPA [72]

2016

Australia

2007–2011

Cohort

NA

NA

NA

1736

21,615

30,869

574,905

Korosec S [73]

2016

Slovenia

2004–2011

Cohort

33.42

33.42

IVF/ET/FET

43

1127

129

3381

Morency AM [74]

2016

Canada

2000–2013

Cohort

33

31.4

ART

4

49

19

181

Luke B [75]

2017

USA

2004–2010

Cohort

35.3

30.4

IVF

378

3538

493

6090

  1. DOP date of publication, GDM gestational diabetes mellitus, ART assisted reproductive technology, Non-ART non-assisted reproductive technology, NA not available