Table 4

IQ and recurrence among survivors of a first CHD event 1991–2008

Recurrence up to 2008 (mean 655, median 184 days)Recurrence up to 2 years (mean 178, median 103 days)Analyses restricted to MI, up to 2008 (mean 1329, median 950 days)
N=1923, 902 casesN=1702,* 606 casesN=1130, 175 cases
HR (95% CI)HR (95% CI)HR (95% CI)
Adjusted forMedium IQLow IQMedium IQLow IQMedium IQLow IQ
Ages1.02 (0.87 to 1.20)1.14 (0.95 to 1.38)0.88 (0.72 to 1.07)1.05 (0.84 to 1.30)1.04 (0.71 to 1.51)1.08 (0.71 to 1.63)
 +Early life factors (potential confounders)†1.03 (0.87 to 1.22)1.16 (0.96 to 1.40)0.90 (0.74 to 1.10)1.08 (0.86 to 1.35)1.05 (0.72 to 1.54)1.10 (0.72 to 1.68)
 + Factors in adolescence and adulthood (potential mediators)‡0.98 (0.83 to 1.16)1.09 (0.89 to 1.34)0.86 (0.70 to 1.06)1.05 (0.82 to 1.33)0.96 (0.65 to 1.43)0.93 (0.59 to 1.46)
  • High IQ is the reference in all analyses.

  • *Intake ended 2006–12–31.

  • †Childhood socioeconomic position, parent’s CVD death at age <65.

  • ‡BMI, smoking, risk use of alcohol, systolic blood pressure, occupational class, income, single household and comorbidity/complications.

  • BMI, body mass index; CHD, coronary heart disease; CVD, cardiovascular diseases.