Which statement best describes the concept of 'reach' in program implementation?

Which statement best describes the concept of 'reach' in program implementation?

• A. Cost per participant.
• B. Proportion of the target population engaged.
• C. Time to implement.
• D. Participant satisfaction.

Answer: (B)

Reach describes how widely a program engages its intended audience. It’s the proportion of the target population that actually participates or is exposed to the intervention, which can be calculated as the number engaged divided by the number in the target population. This matters because even the most effective intervention won’t produce substantial population-level impact if only a small fraction of the eligible group is reached. A program with high reach has the potential to affect more people and generate broader health benefits. For example, if there are 10,000 people who could benefit and 2,000 participate, reach is 2,000 / 10,000 = 20%. Reach differs from other metrics: cost per participant focuses on efficiency, time to implement on pace, and participant satisfaction on acceptability or experience.

Reach describes how widely a program engages its intended audience. It’s the proportion of the target population that actually participates or is exposed to the intervention, which can be calculated as the number engaged divided by the number in the target population.

This matters because even the most effective intervention won’t produce substantial population-level impact if only a small fraction of the eligible group is reached. A program with high reach has the potential to affect more people and generate broader health benefits.

For example, if there are 10,000 people who could benefit and 2,000 participate, reach is 2,000 / 10,000 = 20%.

Reach differs from other metrics: cost per participant focuses on efficiency, time to implement on pace, and participant satisfaction on acceptability or experience.