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Table 2 Pregnancy, labour and baby outcomes by maternal region of birth and obesity

From: Obesity and pregnancy outcomes: Do the relationships differ by maternal region of birth? A retrospective cohort study

 

Number(%)

Crude odds ratio (95 % CI)

P value

Gestational Hypertension/PE/HELLP1 Syndrome

 Australian mothers without obesity

583(4.3 %)

1

-

 Australian mothers with obesity

586(11.3 %)

2.86(2.54–3.22)

<0.001

 South Asian mothers without obesity

264(3.5 %)

0.82(0.71–0.95)

0.008

 South Asian mothers with obesity

45(5.1 %)

1.21(0.89 to 1.65)

0.23

Gestational Diabetes

 Australian mothers without obesity

433(3.2 %)

1

-

 Australian mothers with obesity

491(9.5 %)

3.20(2.80–3.65)

<0.001

 South Asian mothers without obesity

794(10.6 %)

3.62(3.21–4.08)

<0.001

 South Asian mothers with obesity

172(19.7 %)

7.44(6.14–9.02)

<0.001

Preterm Birth

 Australian mothers without obesity

1256(9.2 %)

1

-

 Australian mothers with obesity

501(9.7 %)

1.06(0.95–1.18)

0.32

 South Asian mothers without obesity

441(5.9 %)

0.62(0.55–0.69)

<0.001

 South Asian mothers with obesity

55(6.3 %)

0.66(0.50–0.87)

0.003

Dystocia

 Australian mothers without obesity

226(1.7 %)

1

-

 Australian mothers with obesity

101(2.0 %)

1.18(0.93–1.50)

0.17

 South Asian mothers without obesity

117(1.6 %)

0.94(0.75–1.18)

0.61

 South Asian mothers with obesity

29(3.3 %)

2.03(1.37–3.01)

<0.001

Postpartum Haemorrhage 1000 ml

 Australian mothers without obesity

661(4.9 %)

1

-

 Australian mothers with obesity

372(7.2 %)

1.52(1.33–1.73)

<0.001

 South Asian mothers without obesity

334(4.5 %)

0.92(0.80–1.05)

0.20

 South Asian mothers with obesity

49(5.6 %)

1.16(0.86–1.56)

0.33

Induced Labour

 Australian mothers without obesity

2955(21.7 %)

1

-

 Australian mothers with obesity

1496(29 %)

1.47(1.37–1.58)

<0.001

 South Asian mothers without obesity

1727(23.1 %)

1.09(1.01–1.16)

0.02

 South Asian mothers with obesity

244(27.9 %)

1.39(1.20–1.62)

<0.001

Instrumental Vaginal

 Australian mothers without obesity

1846(13.6 %)

1

-

 Australian mothers with obesity

478(9.3 %)

0.65(0.58–0.72)

<0.001

 South Asian mothers without obesity

1284(17.2 %)

1.32(1.24–1.43)

<0.001

 South Asian mothers with obesity

97(11.1 %)

0.79(0.64–0.99)

0.04

Unplanned Caesarean

 Australian mothers without obesity

1898(14 %)

1

-

 Australian mothers with obesity

1003(19.4 %)

1.49(1.37–1.62)

<0.001

 South Asian mothers without obesity

1398(18.7 %)

1.42(1.32–1.53)

<0.001

 South Asian mothers with obesity

210(24 %)

1.95(1.66–2.29)

<0.001

Small for gestational age(<10th centile)

 Australian mothers without obesity

1449(10.7 %)

1

-

 Australian mothers with obesity

367(7.1 %)

0.64(0.57–0.72)

<0.001

 South Asian mothers without obesity

1262(16.9 %)

1.71(1.57–1.85)

<0.001

 South Asian mothers with obesity

90(10.3 %)

0.96(0.77–1.20)

0.73

Macroscomia(>4 kg)

 Australian mothers without obesity

1575(11.6 %)

1

-

 Australian mothers with obesity

994(19.3 %)

1.82(1.67–1.99)

<0.001

 South Asian mothers without obesity

439(5.9 %)

0.48(0.43–0.53)

<0.001

 South Asian mothers with obesity

111(12.7 %)

1.11(0.90–1.36)

0.32

Fetal compromise (pregnancy or labour)

 Australian mothers without obesity

3431(25.2 %)

1

-

 Australian mothers with obesity

1372(26.6 %)

1.07(1.00–1.15)

0.06

 South Asian mothers without obesity

2315(31 %)

1.33(1.25–1.42)

<0.001

 South Asian mothers with obesity

279(31.9 %)

1.39(1.20–1.61)

<0.001

Admission to NICU/SCN2

 Australian mothers without obesity

2664(19.5 %)

1

-

 Australian mothers with obesity

1238(24.1 %)

1.32(1.22–1.42)

<0.001

 South Asian mothers without obesity

1455(19.6 %)

1.01(0.94–1.08)

0.85

 South Asian mothers with obesity

235(27 %)

1.53(1.31–1.79)

<0.001

Any Perinatal Morbidity

 Australian mothers without obesity

5726(42 %)

1

-

 Australian mothers with obesity

2341(45.3 %)

1.14(1.07–1.22)

<0.001

 South Asian mothers without obesity

3197(42.8 %)

1.03(0.97–1.09)

0.31

 South Asian mothers with obesity

49(50.2 %)

1.39(1.21–1.59)

<0.001

Stillbirth

 Australian mothers without obesity

72(0.5 %)

1

-

 Australian mothers with obesity

31(0.6 %)

1.14(0.74–1.73)

0.56

 South Asian mothers without obesity

32(0.4 %)

0.81(0.55–1.23)

0.32

 South Asian mothers with obesity

6(0.7 %)

1.30(0.56–2.99)

0.54

  1. Number in bold reflect statistical significance
  2. Number(%)
  3. 1Pre-eclampsia(PE)
  4. 2Neonatal intensive care unit(NICU)/ Special care nursery(SCN)