Table 2 Frequency distribution of maternal sociodemographic characteristics
| Â | Frequency (%) |
|---|---|
Age (years) | |
 16–24 years | 353 (17.1%) |
 25–34 years | 1279 (61.9%) |
  ≥ 35 | 424 (20.5%) |
Maternal body mass index (kg/m2) | |
 Underweight (< 18.5) | 129 (6.4%) |
 Normal weight (18.5–24.9) | 1227 (60.7%) |
 Overweight (25–29.9) | 427 (21.1%) |
 Obese (> 30) | 238 (11.8%) |
Relationship status | |
 Married/de-facto | 1859 (89.9%) |
 Single/widowed/separated | 192 (9.3%) |
Smoking | |
 Non-smoker | 1974 (95.6%) |
 Smoker | 87 (4.2%) |
Maternal ethnicity | |
 Caucasian | 824 (40%) |
 Asian | 815 (39.5%) |
 Middle Eastern/Africa | 237 (11.5%) |
 Aboriginal or Torres Strait Islander | 32 (1/6%) |
 Pacific Islander/Maori | 85 (4.1%) |
 South American (Latino) | 28 (1.4%) |
Maternal religion | |
 Christian | 735 (35.6%) |
 Hindu | 143 (6.9%) |
 Buddhist | 104 (5%) |
 Muslim | 270 (13.1%) |
 No religion | 724 (35%) |
 Other | 91 (4.4%) |
Maternal education | |
 Tertiary | 1090 (52.7%) |
 High school | 525 (25.4%) |
 Other (nil, primary) | 412 (19.9%) |
Socio-economic status | |
 Low | 611 (29.6%) |
 Medium | 243 (11.8%) |
 High | 1165 (56.4%) |
Employment | |
 Working | 1220 (59%) |
 Studying | 148 (7.2%) |
 Unemployed/disability | 661 (32%) |
Pregnancy loss | |
 No loss | 1312 (80%) |
 Previous miscarriage, termination or stillbirth | 328 (20%) |
Medical conditions in pregnancy | |
 Type 1 diabetes | 12 (0.6%) |
 Type 2 diabetes | 32 (1.5%) |
 Hypertension | 82 (4%) |
 High cholesterol | 28 (1.4%) |