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Fifteen hundred employees of a major aircraft company were initially examined in 1951 and were classified...

Fifteen hundred employees of a major aircraft company were initially examined in 1951 and were classified by diagnostic criteria for coronary artery disease (CAD). Since then, new cases of CAD have been identified by examinations every five through diagnostic criteria and death certificates. Incidence rates in different subgroups have been computed.

15. Is this study experimental or observational?

16. Is this study an ecological study?

17. Is this study longitudinal or cross-sectional?

18. Is this a case-control study?

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Expert Solution

15. This is an observational study. As 1500 employees were examined and they diagnosed coronary artery disese. It seems that the employees were ready to be examined to see what the result is going to be. And they have not mentioned any treatment in this study, so i think that the employees are later send for the treatment but it is not recorded in this study , so this is observational study.

16.This is not an ecological study because ecological study can be imposed on a large number of people, can be conducted rapidly,with minimal resourses and study unable to examine data for individuals.

But in this study they have examined everyone individually.they examined every five through diagnostic criteria and death certificates.

17.This is longitudinal study. because they have examined a group of people foe CAD disease only. They have not done any comparitive study.

18.Yes, this is a case control study because no involvement is attempted. The goal is to determine the exposure to the risk.This study is completed in less time.

Nightingale answered 2 years ago
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