Question

A researcher conducts a case-control study on cardiovascular disease and history of alcohol use. Participants are asked to report on the quantity of alcohol consumed in the decade prior to diagnosis (or in the decade prior to interview for those without cardiovascular disease). All of the following types of biases could occur in this study except:

a. recall bias

b. social desirability bias

c. lead time bias

d. exposure misclassification

e. selection bias

Answer 1

Correct answer is option E, i.e. selection bias because nothing is mentioned about the selection of participants for conducting the case control study on cardiovascular disease

Recall bias is possible because not everyone is able to recall the exact quantity of alcohol consumed

social desirability bias is possible because at least one of the participant can give false data in order to be viewed favorable by others.

lead time bias is possible because most of the people are able to remember the length of time between detection of disease and its treatment

exposure misclassification is possible because the case control study is conducted for all people who have disease and who dont have disease.

so, only selection bias couldn,t occurred