Table 3

ORs (95% CIs) obtained from multivariable adjusted multilevel models* regressing diabetes mellitus on BMI by educational attainment: World Health Survey 2002–2003

Educational attainment
BMI, kg/m2No formal educationSome/completed
primary school
Secondary/high school
completed
College and beyond
Low-income countries
 Underweight (<18.5)0.65 (0.43 to 0.98)0.93 (0.65 to 1.35)0.54 (0.32 to 0.92)1.10 (0.59 to 2.07)
 Normal (18.5–24.9)1.001.001.001.00
 Overweight (25–29.9)1.69 (1.22 to 2.33)1.53 (1.12 to 2.09)1.38 (0.99 to 1.91)1.28 (0.87 to 1.90)
 Obese I (30–34.9)2.20 (1.28 to 3.78)2.11 (1.28 to 3.48)2.42 (1.49 to 3.95)2.65 (1.54 to 4.56)
 Obese II and III (≥35)1.57 (0.92 to 2.68)2.04 (1.18 to 3.53)1.57 (0.74 to 3.31)0.89 (0.32 to 2.52)
Middle-income countries
 Underweight (<18.5)0.55 (0.33 to 0.93)0.74 (0.57 to 0.96)0.98 (0.73 to 1.32)1.08 (0.53 to 2.20)
 Normal (18.5–24.9)1.001.001.001.00
 Overweight (25–29.9)1.52 (1.18 to 1.96)1.36 (1.21 to 1.54)1.30 (1.16 to 1.45)1.19 (0.91 to 1.56)
 Obese I (30–34.9)1.92 (1.35 to 2.74)1.84 (1.57 to 2.16)1.73 (1.50 to 2.00)1.80 (1.29 to 2.51)
 Obese II and III (≥35)1.53 (0.98 to 2.37)1.95 (1.58 to 2.41)2.36 (1.96 to 2.85)1.44 (0.83 to 2.49)
  • *Models diabetes mellitus on BMI, educational attainment, and BMI×educational attainment, adjusting for age, age squared, sex, marital status, smoking, alcohol use, urbanicity, country's 2003 GDP per capita and four chronic conditions: angina, asthma, arthritis and depression.

  • BMI, body mass index; GDP, gross domestic product.