Skip to main content

Table 1 Baseline characteristics of 1973–78 cohort ALSWH women included/excluded from the sample (N = 14 247)

From: Educational mobility and weight gain over 13 years in a longitudinal study of young women

  Included N = 11,436 Excluded N = 2,811 P-value*
Baseline characteristics    
Mean (Std Dev)    
Weight (kg) 62.7 (12.5) 61.8 (13.3) <0.0001
Height (cm) 165.9 (7.1) 165.3 (8.2) <0.0001
Age at birth of first child** 27.1 (4.3) 23.1 (3.7) 0.0089
Percentage (%)    
BMI    <0.0001
Underweight (<18.5) 9.5 13.6  
Normal weight (18.5 -24.9) 69.0 64.3  
Overweight (25.0 – 29.9) 15.3 15.4  
Obese (≥30.0) 6.2 6.7  
Education***    <0.0001
Low 70.7 74.0  
Intermediate 17.1 19.7  
High 12.2 6.3  
Number of children    <0.0001
No children 93.1 97.6  
1 5.3 1.6  
2 1.3 0.7  
3+ 0.3 0.1  
Marital status    <0.0001
Never married 77.7 71.8  
Married/de facto 21.6 26.4  
Separated/divorced/widowed 0.7 1.9  
Living arrangement    <0.0001
Parents/relatives 49.3 44.9  
Partner/children 26.9 35.9  
Non-family 17.7 13.1  
Alone 6.1 6.1  
Physical activity    <0.0001
Nil/Sedentary 6.0 10.0  
Low 37.1 37.3  
Moderate 13.4 11.7  
High 43.5 41.0  
Alcohol intake    <0.0001
Never/rarely 41.8 49.8  
Low risk 52.9 43.5  
Risky/high risk 5.3 6.7  
Smoking status    <0.0001
Non-smoker 54.1 44.9  
Ex-Smoker 15.1 15.9  
Current smoker 30.8 39.2  
Mental health (based on MHI-5)   <0.0001
Poor (≤52) 20.7 25.8  
Good (>52) 79.3 74.2  
Self-rated health    <0.0001
Excellent 12.8 11.4  
Very good 39.9 33.1  
Good 35.8 40.7  
Poor/Fair 11.5 14.8  
Ability to manage on income    <0.0001
Easy/Not too bad 50.1 41.4  
Difficult sometimes 32.6 35.5  
Impossible/Always difficult 17.4 23.1  
Body shape dissatisfaction    <0.0001
Not at all 8.8 12.8  
Slightly 25.9 23.4  
Moderately 31.9 28.9  
Markedly 33.3 34.9  
Country of birth    <0.0001
Australia 92.6 86.9  
Other English speaking 3.6 4.6  
Europe 0.9 1.6  
Asia 2.0 5.4  
Other (incl. Middle East) 0.8 1.5  
Area of residence    0.4444
Urban (major cities) 51.9 51.4  
Rural (inner regional) 30.4 29.8  
Remote (outer regional/ remote) 17.7 18.8  
  1. sample sizes change slightly due to missing values for some variables.
  2. *P-values from independent t-tests for continuous variables and from Pearson chi square tests for categorical variables.
  3. **Age at birth of first child is based on reported information up to Survey Five.
  4. ***Education at baseline (Low - higher school certificate or lower (≤12 years), Intermediate - trade/certificate/diploma, High - degree/higher degree).