Table 2

 Odds ratios (95% CIs) per one SD advantage in childhood IQ in relation to behavioural risk factors for premature mortality in middle-aged men and women

AdjustmentEver smoked (2688)Current smoker (1350)Heavy drinking (2396)
*Adjusted for sex and father’s occupational social class, family size at time of survey (1962), housing tenure of childhood home at 12 years of age, car ownership at 12 years of age.
†Adjusted for sex and housing tenure in adulthood, car ownership in adulthood, occupational social class in adulthood, income in adulthood.
‡Adjusted for all the above covariates.
Analyses are based on 5340 subjects.
Sex0.77 (0.73 to 0.81)0.69 (0.65 to 0.74)0.89 (0.84 to 0.94)
Childhood socioeconomic position*0.83 (0.78 to 0.88)0.75 (0.70 to 0.81)0.93 (0.87 to 0.98)
Education1.00 (0.93 to 1.08)0.91 (0.83 to 0.99)0.98 (0.91 to 1.05)
Adult socioeconomic position†0.88 (0.83 to 0.94)0.85 (0.79 to 0.91)0.91 (0.86 to 0.97)
Multiple‡1.07 (0.99 to 1.15)1.00 (0.92 to 1.09)1.00 (0.92 to 1.07)