Question

Cross product ratio is determined by which study ?

• A. Case control
• B. Cohort
• C. Cross sectional
• D. RCT

Answer 1

The Correct Option is A

In the field of epidemiology and social and preventive medicine, different study designs are used to investigate the relationships between exposures and outcomes. One such study design is the case-control study, which is particularly useful in situations where the condition or disease being studied is rare.

The case-control study is designed to compare subjects with a specific condition or disease (cases) to subjects without the condition (controls). In these studies, researchers look back retrospectively to investigate the exposures or risk factors the participants had prior to the onset of the disease.

The measure of association often used in case-control studies is the odds ratio. The odds ratio provides an estimate of the cross product ratio, which compares the odds of exposure among the cases to the odds of exposure among the controls. This is crucial because:

• An odds ratio greater than 1 suggests a positive association between the exposure and the disease.
• An odds ratio less than 1 suggests a negative association, indicating a potential protective factor.
• An odds ratio of 1 indicates no association.

Thus, the cross product ratio or odds ratio is a fundamental component derived from case-control studies, highlighting its importance in determining the relationship between exposure and outcome in epidemiological research.

In summary, the correct answer to the question is:

Case control study