Biology
Biology, 15.04.2020 23:18, heavyhearttim

Identify which of the following six types of study designs most appropriately characterizes the situation described below. You are interested in finding out whether middle-aged men who have premature ventricular contractions (PVCs) are at greater risk of developing a myocardial infarction (heart attack) than men whose heartbeats are regular. Electrocardiogram (ECG) examinations are performed on all male office employees 35 years of age or older who work for oil companies in Houston. The ECG tracings are classified as irregular or regular. Five years later, myocardial infarction rates are compared between those with and those without baseline ECG irregularities. a. Cross-sectional study
b. Case-control study
c. Prospective cohort study
d. Historical prospective cohort study
e. Clinical trial
f Community trial

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