If a clinician wants to evaluate all evidence of a condition over time, which index should be used?

If a clinician wants to evaluate all evidence of a condition over time, which index should be used?

• A. Simple index
• B. Cumulative index
• C. Irreversible index
• D. Global index

Answer: (B)

Evaluating all evidence of a condition over time requires capturing the history, not just a present snapshot. A cumulative index does this by recording whether the condition has ever been present up to each examination, thereby accumulating evidence across the study period. This makes it the best choice for understanding the total burden of a condition over time, including past occurrences and fluctuations. In contrast, a simple index shows status at a single point in time, an irreversible index focuses on permanence rather than history, and a global index provides a single overall score without necessarily reflecting temporal accumulation.

Evaluating all evidence of a condition over time requires capturing the history, not just a present snapshot. A cumulative index does this by recording whether the condition has ever been present up to each examination, thereby accumulating evidence across the study period. This makes it the best choice for understanding the total burden of a condition over time, including past occurrences and fluctuations. In contrast, a simple index shows status at a single point in time, an irreversible index focuses on permanence rather than history, and a global index provides a single overall score without necessarily reflecting temporal accumulation.