Effect of beer drinking on risk of myocardial infarction: population based case-control study

Abstract
We conducted a population based case-control study in five Czech districts. All men aged 25–64 who had a first non-fatal myocardial infarction that fulfilled the World Health Organization MONICA (monitoring trends and determinants in cardiovascular disease) criteria of definite or probable infarction 2 over 18 months were considered eligible. All cases agreed to participate in the study. An age stratified random sample of the population (response rate 77%) served as controls. Data on cases and controls were collected by identical protocols (details are available elsewhere 3).