In CHADS-VASc scoring, which statement about age thresholds is correct?

• A. Age over 65 adds 1 point; Age over 75 adds 2 points
• B. Age over 60 adds 1 point; over 75 adds 2
• C. Age over 55 adds 1
• D. Age under 50 adds 1

Answer: (A)

Age contributes to stroke risk in CHADS-VASc through two age bands: 65–74 years adds 1 point, and 75 years or older adds 2 points. In other words, once a patient crosses 65, they enter the 1-point bracket, and once they cross 75, they reach the 2-point bracket. The statement about thresholds captures this progression by describing increasing points with advancing age past 65 and past 75, which matches the established scoring pattern. The other proposed age thresholds (60, 55, or under 50) do not align with how CHADS-VASc assigns points for age, so they wouldn’t correctly describe the age-related contributions to the score.