Some researchers want to investigate the association of work stress and risk of cardiovascular mortality.Investigators selected a systematic sample of 902 participants in strata by sex,age,and occupational group from the Valmet factories in Jyväskylä,in central Finland.Baseline examination in 1973 determined cases of cardiovascular disease,behavioral and biologic risks,and stressful characteristics of work.Follow-up examinations included measurement of blood pressure,cholesterol concentration,and body mass index in 1978 and in 1983.Work stress and risk of cardiovascular mortality: a study of industrial employees What kind of study design is this?

A) Cross-sectional study
B) Prospective cohort study
C) Case-control study
D) Randomized trial
E) Case report

Question

Genesis Dingle · Accepted Answer

Final Answer : B, Explanation :  Investigators defined their exposure (work stress),followed up the participants,and measured outcome (cardiovascular mortality).Cross-sectional study is not correct; they did not capture all information (exposure and outcome) from participants at the same time.Case-control study is not correct; they did not classified participants by disease status.Randomized trial is not correct; they did not randomly allocate exposure status.Case report is not correct; they did not report a single or series of disease cases.

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