In a large case-control study of patients with coronary heart disease (CHD), 26%

Question

In a large case-control study of patients with coronary heart disease (CHD), 26% of the patients were found to be diabetic at the time of diagnosis, compared to 8% of a well-matched control group (matched by age, sex, ethnic group, and several other characteristics) that was examined for diabetes at the same time as the cases were diagnosed. It was concluded that the diabetes played a causal role in the CHD. This conclusion:

a.         Is correct

b.         May be incorrect because there is no control or comparison group

c.          May be incorrect because of more complete ascertainment of CHD in nondiabetic persons

d.         May be incorrect because of less complete ascertainment of diabetes in the CHD cases

e.         May be incorrect because of failure to establish the time sequence between onset of the diabetes and diagnosis of CHD

Explanation / Answer

e.         May be incorrect because of failure to establish the time sequence between onset of the diabetes and diagnosis of CHD -answer

CHD : it is a Coronary illness and a malady in which a waxy substance rang plaque works inside the coronary supply routes. These veins supply oxygen-rich blood to heart muscle

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