In a coho study nonsmokers were found to have carcinoma lung. This indicates –
Correct Answer: Etiology for lung Ca is multifactorial
Description: Ans. is 'b' i.e., Etiology for lung Ca is multifactorialo Smoking is not specific for lung cancer becausei) Not everyone who developed lung cancer has smoked --> Other etiological factors (other than smoking) are also involved in causation of lung cancer, i.e., etiology of lung Ca is multifactorial.Not everyone who smoke develops lung cancer.
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