Purpose and Function of Case-Control Studies
Used to test cause-effect relationships in epidemiology.
Primarily investigates the etiology of rare diseases.
Comparative analysis between disease cases and healthy controls.
Selection and Matching of Groups
Selection of cases (disease sufferers) and controls (healthy individuals).
Methods for matching groups to ensure comparability.
Information collection techniques from participants.
Advantages and Limitations
Cost-effective and fast data collection method.
Limited ability to generalize findings to larger populations.
Potential bias risks in selection and data interpretation.
Interpretation of Results
Estimates the association between exposure and disease incidence.
Calculates the Odds Ratio as a measure of relative risk.
Interpreting findings without knowing the absolute disease incidence.