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Table 1 Summary of the Generation Scotland (GS) and Lothian Birth Cohort 1936 (LBC1936) studies

From: Epigenetic prediction of complex traits and death

  GS LBC 1936
  N Mean SD N Mean SD
Age (years) 5087 48.5 14.0 895 69.6 0.8
Body mass index (kg/m2) 5036 27.0 5.2 894 27.8 4.4
Total cholesterol (mmol/L) 4200 5.1 1.1 885 5.4 1.2
HDL cholesterol (mmol/L) 4192 1.5 0.4 812 1.5 0.4
LDL with remnant cholesterol (mmol/L) 4192 3.6 1.1 812 3.9 1.1
Total:HDL cholesterol ratio (ratio) 4192 3.7 1.2 809 3.8 1.1
Waist-to-hip ratio (ratio) 4984 0.9 0.1
Body fat (%) 4950 30.8 9.6
  N Median Q1, Q3 N Median Q1, Q3
Alcohol (units per week) 2819 8 2, 15 895 5 0.5, 14
Education (years)* 4804 12–13 10–11, 16–17 895 10 10, 12
  N %   N %  
Sex
 Male 1956 38.5   453 50.6  
 Female 3131 61.5   442 49.4  
Smoking
 Never smoked 2523 73.3   418 46.7  
 Ex-smoker   375 41.9  
 Current smoker 921 26.7   102 11.4  
  1. Sample counts are provided for age, sex, and measures for health and lifestyle factors in both the GS and LBC1936 studies
  2. *Education was measured as an ordinal variable: 0, 0 years; 1, 1–4 years; 2, 5–9 years; 3, 10–11 years; 4, 12–13 years; 5, 14–15 years; 6, 16–17 years; 7, 18–19 years; 8, 20–21 years; 9, 22–23 years; 10, ≥ 24 years