Among non-drinkers in the cohort, the hazard ratios for hard coronary events and angina pectoris in Belfast compared with in France were 1.36 (95% CI 0.88 to 2.08; P=0.16) and 1.25 (95% CI 0.76 to 2.06; P=0.37) in crude analyses. After multivariate adjustment for classic risk factors, these hazard ratios were 1.27 (95% CI 0.77 to 2.09; P=0.35) and 1.26 (95% CI 0.69 to 2.30; P=0.44), respectively.