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Table 1 Description of study population

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

 

Australian mothers without obesity (n = 13,605)

Australian mothers with obesity (n = 5163)

South Asian mothers without obesity (n = 7467)

South Asian mothers with obesity (n = 875)

Maternal age groups

  < 20 years

621(4.6 %)

139(2.7 %)

34(0.5 %)

4(0.5 %)

 20–30years

5846(43.0 %)

2289(44.3 %)

4062(54.4 %)

345(39.4 %)

  > 30 years

7138(52.5 %)

2735(53 %)

3371(45.1 %)

526(60.1 %)

Nulliparous

6131(45.1 %)

1887(36.5 %)

3883(52 %)

307(35.1 %)

Past caesarean

1576(11.6 %)

1007(19.5 %)

942(12.6 %)

185(21.1 %)

Private patient

2616(16.2 %)

584(11.3 %)

587(7.9 %)

57(6.5 %)

Smoking

 Smoker

2259(16.6 %)

932(18.1 %)

24(0.3 %)

2(0.2 %)

 Non-Smoker

9964(73.2 %)

3625(70.2 %)

7407(99.2 %)

860(98.3 %)

 Spontaneous quitter

1382(10.2 %)

606(11.7 %)

36(0.5 %)

13(1.5 %)

Pre-existing hypertension

96(0.7 %)

208(4.0 %)

30(0.4 %)

15(1.7 %)

Pre-existing diabetes

162(1.2 %)

121(2.3 %)

60(0.8 %)

29(3.3 %)

Pre-existing thyroid disease

284(2.1 %)

146(2.8 %)

410(5.5 %)

68(7.8 %)

Baby gender-male

6952(51.1 %)

2676(51.8 %)

3857(51.7 %)

438(50.1 %)

Gestational age

  < 37 weeks

1256(9.2 %)

501(9.7 %)

441(5.9 %)

55(6.3 %)

 37–41 + 6 weeks

12,115(89 %)

4570(88.5 %)

6927(92.8 %)

805(92 %)

  ≥ 42 weeks

234(1.7 %)

92(1.8 %)

99(1.3 %)

15(1.7 %)

  1. Number(%)
  2. Chi2 test to determine differences across the four groups. All differences were statistically significant at the p < 0.001 level
  3. Obesity defined as BMI ≥30 kg/m2