Table 2 Characteristics of BMI trajectory group membership

BMI Survey 1 (kg/m²)

1.85

(1.78–1.91)

<0.001

2.92

(2.75–3.10)

<0.001

Age (years)

0.85

(0.80–0.90)

<0.001

0.66

(0.59–0.75)

<0.001

Smoking status

Ex-smoker

1.17

(0.94–1.46)

0.16

1.30

(0.83–2.05)

0.26

(ref non-smoker)

Current smoker

1.19

(0.99–1.42)

0.06

1.36

(0.93–1.98)

0.11

Exercise status

Low

1.27

(0.94–1.71)

0.13

0.78

(0.44–1.38)

0.39

(ref nil/sedentary)

Moderate

1.13

(0.83–1.54)

0.44

0.53

(0.29–0.99)

0.05

High

0.84

(0.62–1.14)

0.27

0.46

(0.26–0.83)

0.01

Live birth

0.95

(0.80–1.13)

0.56

0.83

(0.58–1.18)

0.30

Country of birth

Asians

0.36

(0.16–0.79)

0.01

3.34 × 10^–7

(ref all other countries)

Income (year 2)

$16,000–51,999

0.86

(0.69–1.06)

0.15

0.74

(0.49–1.12)

0.16

(ref < $15,999)

≥ $52,000

0.77

(0.58–1.02)

0.07

0.59

(0.32–1.10)

0.10

Education (ref < year 12)

Trade/certificate

1.13

(0.92–1.40)

0.25

0.83

(0.53–1.32)

0.43

University/post-graduate

0.83

(0.65–1.06)

0.13

0.62

(0.34–1.11)

0.11