Determinants of disease can be identified through what approach?

• A. Random sampling of individuals
• B. Systematic investigation of populations
• C. Anecdotal reports
• D. Laboratory bench experiments only

Answer: (B)

To identify determinants of disease, focus on how disease risk varies across groups and what exposures or conditions are linked to that risk. A systematic investigation of populations does this by using well-designed epidemiologic studies to compare groups with different exposures, follow people over time, and analyze patterns while controlling for confounding. This approach can reveal associations and, with sufficient criteria, suggest causal relationships, which helps pinpoint determinants such as behaviors, environmental factors, or social conditions that influence disease occurrence in the community. Anecdotal reports are prone to bias and lack generalizability, so they cannot reliably identify determinants. Laboratory bench experiments explore biological mechanisms in controlled settings but do not by themselves determine how disease risk operates across populations.