Participant characteristics of those who responded to the 6-month survey
| Participant characteristics | n (n=914)* | Per cent |
|---|---|---|
| Primiparous | 457 | 50.0 |
| Married/living with partner | 890 | 97.3 |
| Degree or higher | 547 | 59.9 |
| Public hospital care | 597 | 65.3 |
| Smoking prior to pregnancy (n=911) | 117 | 12.8 |
| English first language | 636 | 69.6 |
| Australian born (n=913) | 618 | 67.7 |
| Planned to breast feed ≥6 months | 751 | 82.2 |
| Income ($A) (n=912) | n | Per cent |
| <650/week | 44 | 4.8 |
| 650–999/week | 106 | 11.7 |
| 1000–1999/week | 348 | 44.4 |
| ≥2000/week | 314 | 34.6 |
| Declined to answer | 100 | 11.0 |
| Maternal BMI (pre-pregnancy) (n=868) | n | % |
| <18.5 (underweight) | 45 | 5.2 |
| 18.5–24.9 (normal weight) | 491 | 56.6 |
| 25.0–29.9 (overweight) | 206 | 23.7 |
| 30.0–34.9 (class I obesity) | 85 | 9.8 |
| 35.0–39.9 (class II obesity) | 25 | 2.9 |
| ≥40.0 (class III obesity) | 16 | 1.8 |
| Maternal age, infant gestation and birth weight | Mean | SD |
| Maternal age (years) (n=901) (range 19–50) | 33.2 | 4.9 |
| Gestational age of infant (weeks) (n=914) (range 35–42)† | 39.2 | 1.25 |
| Birth weight (g) (n=914) | 3425 | 559 |
*Unless ‘n’ otherwise stated.
†One woman inadvertently recruited when baby <37 weeks.