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Table 1 Characteristics of included studies

From: Association between transabdominal uterine artery Doppler and small-for-gestational-age: a systematic review and meta-analysis

Author

Year

Country

Study design

Group

Sample size

Age (years)

BMI (kg/m2)

Birth weight (g)

GA (weeks)

Complications

Smoking (number)

Doppler time (weeks)

QA

Arakaki

2020

Japan

Cohort

SGA (early-onset)

28

34 (20, 43)a

19.9 (16.3, 25.0)a

2298 (805, 2637)a

38w6d (28w4d, 40w5d)a

PIH

NA

11–13 weeks

7

    

SGA (late-onset)

73

34 (22, 44)a

19.6 (15.8, 27.7)a

2493 (1703, 2943)a

39w4d (33w6d, 41w4d)a

PIH

    

Non-SGA

1261

34 (18, 52)a

20.1 (15.4, 43.8)a

3032 (737, 4483)a

39w2d (24w4d, 41w6d)a

PIH

Arrue

2017

Spain

Cohort

Normal UtA

385

31.6 ± 4.6

23.03 ± 3.7

3293.8 ± 431.0

39.5 ± 1.4

NA

NA

Third trimester

8

    

Abnormal UtA

56

32.7 ± 3.9

24.4 ± 4.5

3033.37 ± 689.7

38.5 ± 2.2

Borna

2019

Iran

Cohort

SGA

11

28(17, 43)a

NA

3069.88 (1200, 4100)a

NA

Severe hypertension, non-severe hypertension

NA

18–22 weeks

6

    

Non-SGA

97

Carter

2015

USA

Cohort

Abnormal UtA

1192

31.5 (17–49)a

26.4 (15.50, 67.67)a

NA

NA

Preeclampsia, early preeclampsia, chronic hypertension, pregestational diabetes mellitus

NA

11–14 weeks

7

    

Normal UtA

Ciobanu

2019

UK

Cohort

SGA

1012

31.7 (27.2, 35.4)b

NA

NA

36.1 (35.9, 36.4)b

Chronic hypertension, diabetes mellitus type 1, diabetes mellitus type 2

NA

35–36 weeks

6

    

Non-SGA

8592

32.2 (28.1, 35.7)b

NA

NA

36.1 (35.9, 36.4) b

Chronic hypertension; diabetes mellitus type 1, diabetes mellitus type 2

Drouin

2018

Canada

Cohort

SGA

486

28.9 (26.5, 31.5)b

23.2 (21.4, 26.1)b

2748 (2542, 2894)b

39.7 (38.9, 40.6)b

Chronic hypertension, diabetes mellitus; rheumatoid disease

NA

11–13 weeks

6

    

Non-SGA

4149

28.7 (26.1, 31.3)b

23.8 (21.7, 27.1)b

3368 (3118, 3644)b

39.9 (39.0, 40.7)b

chronic hypertension, diabetes mellitus, rheumatoid disease

Dugoff

2005

USA

Cohort

Abnormal UtA

1008

33 ± 5

23.3 ± 4.0

NA

38.8 ± 2

NA

61

10–14 weeks

7

    

Normal UtA

El-Hamedi

2005

UK

Cohort

Abnormal UtA

98

NA

NA

NA

NA

NA

NA

Second trimester

5

    

Normal UtA

232

NA

NA

NA

NA

NA

Espinoza

2010

USA

Cohort

SGA

396

24 (15, 46)a

NA

2770 (550, 3070)a

39.3 (27.4, 41.9)a

Preeclampsia

55

23–25 weeks

8

    

Non-SGA

3153

26 (13, 46)a

NA

3450 (870, 5350)a

39.6 (25.6, 43)a

Preeclampsia

334

Ghi

2010

Italy

Cohort

Abnormal UtA

62

33.67 ± 5.34

21.66 ± 1.70

2408 ± 763

36.20 ± 3.45

NA

NA

26–28 weeks

6

    

Normal UtA

42

32.64 ± 5.75

21.85 ± 1.97

3116 ± 463

38.59 ± 1.76

NA

González-González

2017

Spain

Cohort

SGA

193

30.45 ± 6.37

26.4 ± 5.72

2421.1 ± 529.6

38.8 ± 3.3

Pregestational diabetes, chronic hypertension

64

11–13 weeks

7

    

Non-SGA

795

31.11 ± 5.78

26.3 ± 5.29

3318.4 ± 520.9

39.5 ± 1.9

Pregestational diabetes, chronic hypertension

150

Groom

2009

New Zealand

Cohort

Normal UtA

2189

28.4 ± 5.7

25.2 ± 5.2

3403 ± 561

39.9 ± 1.9

NA

219 (at 15-wk visit); 227 (in pregnancy)

20–24 weeks

6

    

Normal + abnormal UtA

    

Abnormal + normal UtA

Hafner

2006

Austria

Cohort

SGA

2489

29.2 ± 5.2

23.7 ± 4.6

NA

NA

NA

NA

21–23 weeks

9

    

Non-SGA

He

2021

China

Cohort

SGA

76

29.6 ± 3.4

22.8 ± 1.5

1830 (920–2990)a

34.0 (28.0–39.1)a

Gestational diabetes mellitus, preeclampsia

NA

11–13 weeks

9

    

Non-SGA

1720

30.5 ± 3.9

24.7 ± 1.7

3300 (2370–4640)a

39.0 (36.0–41.0)a

Gestational diabetes mellitus, preeclampsia

Hershkovitz

2005

UK

Cohort

Normal UtA

55

NA

NA

3080(828, 4460)a

39 (27, 42)a

Preeclampsia

NA

20–24 weeks

7

    

Abnormal UtA (unilateral)

11

NA

NA

2300(1282, 3820)a

37 (32, 39.5)a

Preeclampsia

NA

    

Abnormal UtA (bilateral)

22

NA

NA

1892(828, 3610)a

35 (27, 40)a

Preeclampsia

NA

Kienast

2016

Germany

Cohort

SGA

40

25.8 ± 7.1

23 ± 1.7

2288.6 ± 479.1

36.6 ± 3.8

Chronic hypertension, systemic lupus erythematosus

NA

18–25 weeks

9

    

Non-SGA

306

24.4 ± 5.0

22.9 ± 2.4

3088.6 ± 404.0

38.6 ± 2.7

Chronic hypertension, Systemic lupus erythematosus

NA

Konchak

1995

USA

Cohort

Normal UtA

103

27.1 ± 5.1

NA

3086 ± 690.8

NA

NA

NA

17–22 weeks

7

    

Abnormal UtA

Lobmaier

2021

Germany

Cohort

SGA

149

32.1 ± 4.5

22.5 ± 3.3

2630 ± 360

39.9 ± 1.2

PIH/PE, autoimmune disease, history of SGA

12

Third trimester

7

    

Non-SGA

143

32.2 ± 4.3

22.0 ± 2.7

3488 ± 369

38.7 ± 1.3

PIH/PE, autoimmune disease, history of SGA

4

Maged

2017

Egypt

Cohort

Non-SGA

297

27.37 ± 3.66

24.49 ± 2.04

3277.07 ± 243.06

38.84 ± 1.98

NA

41

18–22 weeks

8

    

SGA

52

28.54 ± 3.05

24.5 ± 2.15

2466.54 ± 306.1

37.35 ± 1.47

18

Maroni

2011

Italy

Cohort

Abnormal UtA

66

34.42 ± 4.44

23.81 ± 2.82

2942 ± 583

38.2 ± 1.64

Late-onset pre-eclampsia

NA

34 weeks

7

    

Normal UtA

66

34.12 ± 4.12

23.36 ± 2.38

3404 ± 469

38.9 ± 1.3

Late-onset pre-eclampsia

NA

McCowan

2010

New Zealand

Cohort

SGA

376

28.3 ± 5.9

26.2 ± 6.0

2573 ± 605

38.7 ± 3.8

NA

72

20 weeks

9

    

Non-SGA

3137

28.1 ± 5.8

25.4 ± 5.1

3487 ± 514

39.6 ± 2.0

NA

315

Miranda

2017

Spain

Case–control

SGA

175

32 ± 5

22.4 ± 3.7

2421 ± 570

38.4 ± 2.8

Chronic hypertension, autoimmune disease, previous history of SGA

26

32–36 weeks

8

    

Non-SGA

875

31 ± 5

22.8 ± 4.1

3381 ± 396

39.7 ± 1.3

Chronic hypertension, autoimmune disease, previous history of SGA

75

Mitsui

2016

Japan

Cohort

Abnormal UtA

24

33.3 ± 6.2

24.3 ± 5.8

2450.4 ± 768.1

37.6 ± 3.1

PIH

NA

Second trimester

7

    

Normal UtA

13

34.3 ± 5.6

29.1 ± 6.4

2982.0 ± 576.6

39.3 ± 1.6

PIH

NA

Miyakoshi

2001

Japan

Cohort

Abnormal UtA

28

32.6 ± 4.16

NA

2,934 ± 417.3

38.9 ± 1.8

PIH

NA

21–24 weeks

8

    

Normal UtA

331

Običan

2020

USA

Cohort

Abnormal UtA

200

27 (23, 31) b

25 (20.9, 31.4) b

NA

NA

Chronic hypertension,

20

Third trimester

6

    

Normal UtA

Ohkuchi

2000

Japan

Cohort

SGA

15

28.1 ± 3.7

NA

2438 ± 276

39.6 ± 1.5

NA

NA

16–23 weeks

8

    

Non-SGA

264

28.7 ± 4.0

NA

3105 ± 744

39.1 ± 2.2

NA

NA

Paules

2019

Spain

Case–control

Non-SGA

202

33.6 (30.5, 36.5)b

22.8 (20.5, 25.3)b

3020 (2510, 3420) b

39.0 (35.7, 40.1) b

Chronic hypertension, pregestational diabetes

23

35–37 weeks

7

    

SGA

184

33.4 (29.0, 36.4)b

21.6 (19.8, 23.4)b

2337 (1935, 2613)b

37.7 (37.0, 39.4)b

Chronic hypertension, pregestational diabetes

48

Phupong

2003

Thailand

Cohort

Abnormal UtA

58

26.4 ± 4.8

NA

NA

NA

preeclampsia

NA

22–28 weeks

5

    

Normal UtA

264

Quant

2016

USA

Cohort

SGA

40

31 (27–35)b

26.0 ± 7.01

NA

NA

Chronic hypertension

NA

18–24 weeks

7

    

Non-SGA

333

Rial-Crestelo

2019

Spain

Cohort

SGA

155

34 ± 5.1

23 ± 3.6

2733 ± 250

40 ± 1.3

Maternal disease, previous FGR

25

32–34 weeks

9

    

Non-SGA

875

34 ± 5.4

24 ± 4

3423 ± 384

40 ± 1.3

Maternal disease, previous FGR

79

Rodríguez

2018

Chile

Cohort

Abnormal UtA

33

28.2 ± 7.47

34.5 ± 5.02

2533 ± 561.3

36.4 (35.7, 37.7)b

Chronic hypertension, systemic lupus erythematosus, diabetes mellitus type-2

0 (0)

34 weeks

7

    

Normal UtA

53

26.0 ± 7.04

32.7 ± 5.47

3227 ± 447.9

38 (37.0, 38.1)b

Chronic hypertension, systemic lupus erythematosus, diabetes mellitus type-2

3

Roeder

2014

USA

Cohort

Normal UtA

108

32.2 ± 5.3

24.2 (22.1, 27.8)b

NA

NA

Prior preeclampsia, chronic hypertension, prior IUGR, pregestational diabetes

NA

24–26 weeks

6

    

Abnormal UtA

24

Rueangjaroen

2021

Thailand

Cohort

SGA

24

29.5 ± 5.2

23.4 ± 4.3

2256 ± 551

37.3 ± 2.8

NA

NA

11–14 weeks; 18–22 weeks

8

    

Non-SGA

311

29.7 ± 5.1

23.1 ± 4.5

3076 ± 455

38.2 ± 2.1

NA

NA

Schwartz

2014

USA

Cohort

SGA

56

29.6 ± 5.8

26.2 ± 7.7

NA

NA

Chronic hypertension

9

11–14 weeks

9

    

Non-SGA

522

30.8 ± 5.8

27.1 ± 6.8

NA

NA

Chronic hypertension

48

Seravalli

2014

USA

Cohort

SGA

172

28 (22, 35)b

27.5 (23.5, 34.4)b

NA

NA

History of diabetes, history of preeclampsia, history of hypertension, prior IUGR

NA

18–22 weeks

7

    

Non-SGA

1810

30 (24, 35)b

27.6 (24.2, 32.6)b

NA

NA

history of diabetes, history of preeclampsia, history of hypertension, prior IUGR

NA

Shwarzman

2013

Israel

Cohort

Normal UtA

144

29.35 ± 5.8

NA

NA

34.33 ± 2.99

Diabetes mellitus, hypertensive disorders

NA

34–37 weeks

8

    

Abnormal UtA (unilateral pathologic waveforms)

37

27 .30 ± 6.44

NA

NA

34.08 ± 2.80

Diabetes mellitus, hypertensive disorders

NA

    

Abnormal UtA (bilateral pathologic waveforms)

17

30.12 ± 5.3

NA

NA

34.33 ± 3.70

Diabetes mellitus, hypertensive disorders

NA

Triunfo

2017

Spain

Case–control

SGA

46

32.4 ± 4.7

23.9 ± 3.1

2215.1 ± 576.9

37.4 ± 3.1

Chronic hypertension, gestational diabetes, autoimmune disease, coagulation disorders, neurological disorders, endocrinological disorders

23 (< 10 cigarettes/day); 12 (≥ 10 cigarettes/day)

First trimester; Second trimester; Third trimester

8

    

Non-SGA

92

31.7 ± 4.8

24.0 ± 3.5

3374.2 ± 404.2

39.7 ± 1.2

Chronic hypertension, gestational diabetes, autoimmune disease, coagulation disorders, neurological disorders, endocrinological disorders

< 10 cigarettes/day: 8(8.7%);≥ 10 cigarettes/day: 6(6.5%)

Valiño

2016

UK

Cohort

SGA

379

37.7 (26.9, 35.3)b

NA

NA

40.0 (39.1, 40.9)b

Chronic hypertension, diabetes mellitus, SLE/APS

365

35–37 weeks

8

    

Non-SGA

3509

Ventura

2015

Peru

Cohort

Abnormal UtA

91

33 (28, 36)b

NA

2840 (2370, 3320)b

39 (37, 40)b

Hypertension, diabetes mellitus

32

28 weeks

8

    

Normal UtA

174

3090 (2795, 3400)b

39 (38, 40)b

Viola

2014

USA

Cohort

SGA

191

28 (22, 35)b

26.1 (22.9, 33.7)b

2605 (2281, 2736)b

39 (37.4, 40)b

Diabetes, hypertension, prior preeclampsia, prior IUGR

28

11–14 weeks

8

    

Non-SGA

2076

30 (25, 35)b

26.6 (23.1, 32)b

3320 (3045, 3604)b

39.3 (38.3, 40)b

Diabetes, hypertension, prior preeclampsia, prior IUGR

192

Zarean

2018

Iran

Cohort

Normal UtA

60

30.53 ± 5.51

NA

3236.50 ± 592.64

37.93 ± 1.96

Preeclampsia, gestational diabetes, hypertension, hypertension with preeclampsia

NA

30–34 weeks

7

    

Abnormal UtA

40

28.50 ± 6.03

NA

2422.75 ± 473.95

36.49 ± 2.51

Preeclampsia, gestational diabetes, hypertension, hypertension with preeclampsia

NA

  1. Abbreviation: BMI body mass index, GA gestational age, QA quality assessment, SGA small-for-gestational age, PIH pregnancy-induced hypertension, NA not applicable, UtA uterine artery Doppler, GH gestational hypertension, PE pre-eclampsia
  2. a Data are presented as the median (range)
  3. bData are presented as the median (IQR)