Table 3 Predictors of exclusive breastfeeding at 4 months^a

  EBF only

1

1

  Mix feed with formula

0.21***

0.12, 0.38

0.24***

0.12, 0.50

  6 months

1

1

  Others (don’t know and ≠6 months)

0.34**

0.20, 0.56

0.40*

0.20, 0.80

  6 months

1

1

  ≠ 6 months

0.58*

0.35, 0.95

0.48*

0.25, 0.93

  Negative breastfeeding sentiment score

0.996**

0.994, 0.999

1.000

0.996, 1.004

  Breastfeeding control score

1.07***

1.04, 1.10

1.07***

1.03, 1.11

  Family subjective norm score

1.02*

1.00, 1.03

1.01

0.99, 1.03

  Predominantly Chinese

1

1

  Bilingual

1.89*

1.06, 3.35

1.44

0.67, 3.09

  Predominantly English

2.47*

1.02, 5.99

1.25

0.34, 4.60

Socio-demographic factors

  Full time

1

1

  Part time

1.97

0.98, 3.98

1.61

0.66, 3.91

  Not working or studying

1.60

0.80, 3.20

1.71

0.68, 4.32

  High ($80,000 and over)

1

1

  Middle ($50,000 - $79,999)

0.63

0.31, 1.29

0.82

0.33, 2.02

  Low (<$50,000)

0.44*

0.19, 1.00

0.61

0.23, 1.67

  Wish not to answer

1.16

0.59, 2.27

1.25

0.52, 3.05

Length of residence in Australia (years)

1.05*

1.02, 1.08

1.05*

1.00, 1.10

  Vaginal

1

1

  Caesarean

0.53*

0.29, 0.96

0.83

0.38, 1.80

Pre-pregnancy body mass index

0.93

0.85, 1.01

0.99

0.88, 1.11