Table 1 Maternal characteristics
|  | Mean ± SD | Range |
|---|---|---|
Maternal age (years) | 31.9±4.25 | 19.3-43.5 |
Pre-pregnancy BMI (kg/m2) (n=430) | 24.8±4.88 | 16.3-55.0 |
Postpartum BMI (kg/m2) (n=416) | 26.2±5.00 | 17.1-46.8 |
| Â | n (%) | Â |
Marital status | Â | Â |
 Married | 74.1 |  |
 De facto | 22.3 |  |
 Separated/Divorced | 1.3 |  |
 Never married | 2.2 |  |
Birth country | Â | Â |
 Australia | 75.9 |  |
 UK | 3.3 |  |
 New Zealand | 2.2 |  |
 Other | 18.5 |  |
Weekly household income (n=433) | Â | Â |
 $1-1499 | 36.7 |  |
 $1500-1999 | 22.0 |  |
 $2000 or more | 29.7 |  |
 Unsure/Don’t want to answer | 11.6 |  |
Education (n=447) | Â | Â |
 No qualification/up to year 12 | 11.6 |  |
 Trade/apprenticeship/certificate/diploma | 30.0 |  |
 University degree/Higher degree | 58.4 |  |
Employment status (n=446) | Â | Â |
 Full time work | 3.4 |  |
 Part time work | 6.3 |  |
 Keeping house/raising children full time | 88.6 |  |
 Studying full time/Unemployed | 1.8 |  |
Smoking during pregnancy | Â | Â |
 Yes | 3.8 |  |
 No | 96.2 |  |
Smoking currently | Â | Â |
 Yes | 5.4 |  |
 No | 94.7 |  |
Breastfeeding | Â | Â |
 Exclusive breastfeeding | 49.6 |  |
 Breastfeeding combined with formula or other fluids | 28.1 |  |
 Formula feeding only | 22.3 |  |