Coronary event registration for living cases was focused on hospitals.

Hospitalized patients are interviewed shortly after the event. Twenty-eight day case fatality for all registered events was determined by a review of hospital and death registration records.

A variety of data were collected using hot pursuit. These included demographic information, medical and diagnostic data including symptoms, enzymes, electrocardiograms and autopsy findings when performed. Cardiac enzyme results are extracted from hospital notes, and ECGs are copied and subsequently coded according to the Minnesota Code.

The majority of fatal episodes were detected either through notification from the Coroner’s Pathologist or by regular searches of death registrations

Information on fatal episodes is collected from death certificates, from post mortem records, and from relatives a self-administered questionnaire.

Hospital coronary care information was recorded continuously, but it was obligatory to measure it for two periods during the decade of surveillance.

Treatment data was collected,including eight medications and treatments, such as thrombolysis or invasive reperfusion (e.g., angioplasty or coronary artery bypass grafts) including those used before the onset of the attack, during hospitalization, and at discharge from hospital.

Hospital coronary care information was recorded continuously, but it was obligatory to measure it for two periods during the decade of surveillance.

Treatment data was collected,including eight medications and treatments, such as thrombolysis or invasive reperfusion (e.g., angioplasty or coronary artery bypass grafts) including those used before the onset of the attack, during hospitalization, and at discharge from hospital.

Data collection in the population included health status, specifically risk factors for Cardiovascular disease and demographic information. Smoking was ascertained by interview or self administered questionnaire and validated by chemical measurements.

Blood pressure was measured manually by a standard sphygmomanometer or a random zero sphygmomanomete and body mass index was also measured.

Data collection in the population included health status, specifically risk factors for Cardiovascular disease and demographic information. Smoking was ascertained by interview or self administered questionnaire and validated by chemical measurements.

Blood pressure was measured manually by a standard sphygmomanometer or a random zero sphygmomanomete and body mass index was also measured.

Data collection in the population included health status, specifically risk factors for Cardiovascular disease and demographic information. Smoking was ascertained by interview or self administered questionnaire and validated by chemical measurements.

Blood pressure was measured manually by a standard sphygmomanometer or a random zero sphygmomanomete and body mass index was also measured.