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