The Copenhagen City
Heart Study was a prospective survey of 19,698
women and men aged 20 years or older invited
to two cardiovascular examinations at 5-year
intervals. The baseline examination included
3,015 men and 3,501 women aged 55–84 years; 474
stroke events occurred during 10 years of followup.
In both cohorts initial cases of stroke and TIA
recorded during 10 years of follow-up were used.
For the Copenhagen City Heart Study population
some of the risk factors (diabetes mellitus, cigarette
smoking, AF, and left ventricular hypertrophy)
had regression coefficients different from those of
the Framingham Study population. Consequently,
the probability of stroke for persons presenting
these risk factors and their combinations varied
between the two studies.