Which activity is part of evaluating surveillance performance?

• A. Assessing timeliness and completeness of data
• B. Conducting clinical trials
• C. Drafting unrelated legislation
• D. Managing hospital budgets

Answer: (A)

Evaluating surveillance performance centers on how well the system delivers usable data, focusing on timeliness and completeness. Timeliness measures how quickly information about events is reported after they occur, which affects how fast public health actions can be taken. Completeness checks what portion of actual cases or events the system captures, reflecting data representativeness and reliability. Together, these aspects reveal delays, gaps, or underreporting that limit the usefulness of surveillance for guiding interventions and policy adjustments. The other activities—conducting clinical trials, drafting unrelated legislation, and managing hospital budgets—are not about assessing how well a surveillance system functions or the quality of its data, so they don’t measure surveillance performance.