How does USPSTF define net benefit?

• A. Overall balance of anticipated benefits minus harms for the target population.
• B. The cost-effectiveness ratio.
• C. The number needed to treat.
• D. The likelihood of adverse events alone.

Answer: (A)

Net benefit is defined as the overall balance of anticipated benefits minus harms for the target population. It captures the total value of a preventive service by weighing how many people gain health benefits against how many experience harms, taking into account both how likely those effects are and how large they are. A positive net benefit means benefits outweigh harms across the population, supporting a recommendation; a negative net benefit means harms outweigh benefits.

This differs from a cost-effectiveness ratio, which focuses on costs relative to health gains; it isn’t the number needed to treat, which is a measure of how many people must be treated to prevent one outcome; and it isn’t merely the likelihood of adverse events, which ignores the benefits side of the equation.