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Table 3 Baseline weight and weight gain * over 13 years by educational mobility in 1973–78 cohort ALSWH women (n = 9 463**)

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

  % weighted (unweighted) Model 1 estimate (95% CI) Model 2 estimate (95% CI)
Baseline weight (kg)   63.15 (62.46, 63.85) 57.85 (56.77, 58.92)
Difference in baseline weight by educational mobility
Stable low 18.9 (21.7) Reference Reference
Low-intermediate 9.9 (10.9) -0.78 (-1.8, 0.27) -0.78 (-1.78, 0.21)
Stable intermediate 19.8 (20.5) 0.17 (-0.68, 1.02) 0.31 (-0.51, 1.12)
Upgrade to high 12.8 (12.0) -2.71 (-3.68, -1.75) -2.13 (-3.07, -1.19)
Stable high 38.6 (34.9) -2.66 (-3.41, -1.91) -1.77 (-2.52, -1.02)
Increase per year (kg)   1.12 (1.06, 1.18) 1.45 (1.39, 1.52)
Difference in increase per year by educational mobility  
Stable low   Reference Reference
Low-intermediate   0.04 (-0.09, 0.07) 0.01 (-0.07, 0.08)
Stable intermediate   -0.09 (-0.15, -0.22) -0.07 (-0.13, -0.002)
Upgrade to high   -0.24 (-0.31, -0.17) -0.20 (-0.27, -0.13)
Stable high   -0.32 (-0.37, -0.26) -0.28 (-0.33, -0.22)
Attenuation per year (time x time) -0.02 (-0.03, -0.02) -0.05 (-0.06, -0.05)
  1. *Random effects models (intercept and slope) with weight measured at age 18–23 years, 22–27 years, 25–30 years, 28–33 years and 31–36 years
  2. Change in education level from age 22–27 years to age 31–36 years: (Low - higher school certificate or lower (≤12 years), Intermediate - trade/certificate/diploma, High - degree/higher degree). Upgrade to high includes women who had a low (70%) or intermediate (30%) education who later upgraded to a high education.
  3. **Sample slightly smaller than the 9,907 women who had a value for change in education level, due to missing values for some covariates.
  4. Model 1 – baseline centred age, baseline centred height and area of residence.
  5. Model 2 - Model 1 + physical activity, alcohol intake, mental health, self-rated health, number of children, smoking, age at first birth, living arrangement, marital status, health transition, shape dissatisfaction, income management and country of birth.