In a case-control study, the cases were found to be consuming zarda pan more frequently than controls and the difference was statistically significant. It indicates:
Correct Answer: An association exists between zarda pan and disease
Description: Case-control study that looks backward in time from final disease outcome to potential cause.
In it, groups of affected individuals (cases) and unaffected individuals (controls) are compared to the extent of their exposure to some suspected risk factor.
Key points
In a case-control study, if the outcome was statistically significant, there is an association between cases and controls.
Soben Peter
Essentials of preventive and community dentistry
4th edition
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