What is the primary use of historical data reviews in a cancer registry?

The primary use of historical data reviews in a cancer registry focuses on ensuring that the data collected over time is both accurate and consistent. While verifying incidence rates is certainly a vital component of these reviews—because it helps in assessing trends and patterns of cancer occurrence within populations—it's essential to recognize that reviewing coding accuracy is equally important for maintaining the integrity of the database.

Historical data reviews typically encompass both the verification of incidence rates and the review of coding accuracy. Verifying incidence rates allows registrars to evaluate how changes in coding practices, treatment protocols, or population demographics may affect reported cancer cases. Similarly, reviewing coding accuracy ensures that the information recorded adheres to established coding guidelines, which is crucial for reliable cancer statistics and research.

Given this understanding, the most comprehensive answer would acknowledge that both verifying incidence rates and reviewing coding accuracy are integral to the historical data review process. This makes the combined option reflecting both functions the most fitting choice.