SD=standard deviation
GCSE= The General Certificate of Secondary Education
IMD=Index of Multiple deprivation
+White British BMI categories: Underweight, <18.5 kg/m2; recommended weight, 18.5-24.9 kg/m2; overweight, 25-29.9 kg/m2; obese, ≥30 kg/m2; obese class 1, 30.0-34.9 kg/m2; obese class 2, 35.0-39.9 kg/m2; obese class 3, ≥40.0 kg/m2South Asian BMI categories: underweight, <18.5 kg/m2; recommended weight, 18.5-22.9 kg/m2; overweight, 23-27.49 kg/m2; obese, ≥27.5 kg/m2; obese class 1, 27.5-32.49 kg/m2, obese class 2, 32.5-37.49 kg/m2, obese class 3, ≥37.5 kg/m2
**Significant at 0.01 significance level (two-tailed)
pT-test for continuous variable and chi-squared with Fishers exact (where cell count < 5) for categorical variables