Question

Conduct a brief analysis of the joint classification table (below) to asses whether there is effect measure modification by alcohol consumption on the association between smoking tobacco and cancer of the oral cavity.

Smoking and Alcohol intake	Cases	Controls	OR 95% CI)
Never smoker and abstainer	50	85	1.0 (reference)
Never smoker and Heavy Drinker	184	130	2.41 (1.59-3.64)
Smoker and abstainer	221	75	5.01 (3.24-7.75)
Smoker and Heavy Drinker	350	12	49.58 (25.29-97.20)

Answer 1

yes ], there is a strong relation between smokers and drinkers. the combination of smoking and drinking increases the health issues like cancer of oral cavity. the individual will cause less effect like the persons who take only alcohol or only smoking having less effect of oral cancer compared to the people who having both smoke and alcohol intake .

The above mentioned table indicates the cases with the level of effectiveness of having individual with smoking and drinking and also with both drinking and smoke intake .

persons having individual smoking or drinking have less cases and more control cases compared to persons having both smoke and drinkers.