Table 1 Demographic characteristics of Chinese-born and Australian-born mothers living in Australia
|  | Chinese-born n = 602 | Australian-born n = 602 |
|---|---|---|
Mothers | Mean (SD) | Mean (SD) |
 BMI of mother at start of pregnancy*** | 21.45 (4.07) | 24.9 (5.18) |
 BMI at survey completion*** | 23.16 (5.24) | 26.00 (5.47) |
| Â | Proportion (%) | Proportion (%) |
Age (years)*** | ||
 15–24 years | 2.7 | 12.0 |
 25–29 years | 27.2 | 24.6 |
 30–34 years | 40.2 | 35.6 |
 35+ years | 29.9 | 27.8 |
Socioeconomic disadvantage (quintiles) *** | ||
 1st quintile (greatest disadvantage) | 13.3 | 13.8 |
 2nd quintile | 7.7 | 15.9 |
 3rd quintile | 26.7 | 23.3 |
 4th quintile | 20.9 | 21.1 |
 5th quintile (least disadvantage) | 31.4 | 26.0 |
 Main language (English) *** | 15.0 | 100.0 |
 Spouse usually living in house (yes) | 94.3 | 92.2 |
 Spouse at time of birth (yes) * | 96.0 | 93.3 |
Highest school year completed*** | ||
 Year 12 or equivalent | 94.4 | 76.9 |
 Year 11 or equivalent | 1.8 | 10.1 |
 Year 10 or equivalent | 3.3 | 13.0 |
 Did not go to school | 0.5 | 0.0 |
 Educational qualification (yes) *** | 89.9 | 80.7 |
Highest qualification*** | ||
 Postgraduate | 43.5 | 13.0 |
 Bachelor degree | 35.3 | 39.9 |
 Diploma | 14.4 | 13.4 |
 Certificate | 6.8 | 33.7 |
Income*** | ||
 >$156,000 | 3.7 | 10.3 |
 $88,400–$155,999 | 21.8 | 34.4 |
 $52,000–$88,399 | 21.9 | 28.8 |
 $26,000–$51,900 | 27.8 | 15.6 |
 <$25,999 | 24.8 | 11.0 |
Parity*** | ||
 One | 62.6 | 43.3 |
 Two | 31.5 | 35.2 |
 Three | 5.0 | 14.5 |
 Four or more | 0.9 | 7.0 |
Currently smoking (yes) *** | ||
 Daily | 0.4 | 9.0 |
 At least weekly | 0.0 | 1.2 |
 Less often | 0.1 | 2.1 |
Smoked whilst pregnant (yes) *** | ||
 Daily | 0.2 | 6.7 |
 At least weekly | 0.2 | 1.2 |
 Less often | 0.0 | 1.4 |