A case-control study of lung cancer was conducted which compared the smoking habits of patients with...
A case-control study of lung cancer was conducted which compared the smoking habits of patients with lung cancer to the smoking habits of other patients attending the same respiratory clinic. The study found no association between smoking and lung cancer.
What is the most likely study error that explains this scenario?
Select one:
Differential misclassification bias.
Random measurement variability.
Non-differential misclassification bias.
Random sampling error.
Selection bias.
Homework Answers
Correct option:
Selection bias
Explanation:
Selection bias is introduced by the selection of individuals for analysis in such a way that proper randomization is not achieved which makes the sample not representative of the population. In the given experimentation, it is impoosible to randomize patients with lung cancer into to the smoking habits and to the non - smoking habits.
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