The incidence of ischaemic heart disease and acute myocardial infarction in Spain is lower than in other countries despite a high prevalence of vascular risk factors, suggesting the presence of unmeasured protective factors.
Despite high prevalence of vascular risk factors, incidence rates were lower than those reported for other countries and other periods, but similar to those reported in the few population-based studies in Spain. Effect measures of vascular risk factors were mainly as reported worldwide and support the hypothesis that protective factors not considered in this study must exist as to explain low rates. This study shows the feasibility of conducting epidemiological cohort studies in primary-care settings.
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Marín et al. (2006) studied this question.
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