['To do a gender comparison of absolute risk of recurrent myocardial infarction (MI).', 'Registration of all first and second MI amongst Icelandic males and females 1981-1999.', 'The whole of Icelandic population, 40-74 years of age.', 'The mean recurrence rate (second attack) for men was 45.7/1000 MI survivors/year and for women 39.0/1000 per year. The male/female (M/F) ratio was 1.17, 95% confidence interval 1.00-1.37, P = 0.05 and did not change significantly with age. The M/F ratio for first MI in comparison was two to seven, lowest in the oldest group. The recurrence rate decreased significantly and similarly in both sexes during the observation period.'] Is the absolute risk of recurrent myocardial infarction similar amongst both sexes : MONICA Iceland Study 1981-1999?