Table 3

Risk of first-ever stroke associated with active smokers and ex-smokers, men and women aged 35–74 years

Smoking statusReference group 1: non-smokers (exposed and not exposed to ETS)
Patients with stroke (n = 521)Community controls
(n = 1851)
OR3-15095% CI
Never smoked16231.190148.71.00Referent
Active smokers16431.525513.84.143.04–5.63
 ⩾15 cigarettes/day9518.21548.34.593.17–6.63
 6–14 cigarettes/day428.1623.44.372.61–7.32
 ⩽5 cigarettes/day275.2392.12.561.35–4.88
 <2 years224.2462.42.301.24–4.27
 2–10 years499.419010.31.230.80–1.88
 >10 years10319.843523.50.790.57–2.51
  • 3-150 Adjusted for age, sex, diabetes, hypertension, and history of heart disease in logistic regression analysis.

  • ETS = environmental tobacco smoke; OR = odds ratios; CI = confidence intervals.