Which factor is explicitly mentioned as guiding tailored screening in high-risk populations?

• A. Ethnicity only
• B. Family history
• C. Hair color
• D. Blood type

Answer: (B)

Tailoring screening relies on risk stratification, where higher-risk individuals receive adjusted screening plans. Family history is the factor explicitly used to identify those at increased risk and to guide when and how often to screen. It captures inherited risk and patterns within families, which is why guidelines often recommend earlier or more intensive screening for people with affected first-degree relatives.

In contrast, hair color and blood type do not inform screening strategies, and ethnicity by itself is not the explicit factor used to tailor screening across USPSTF recommendations, though ethnicity can influence risk for certain diseases in specific contexts.