What type of study involves data collectors abstracting the same charts to review coding consistency?

The correct answer is a reliability study. In this context, the focus is on assessing the consistency and accuracy of data collected from patient charts. Reliability studies are designed to determine how consistently two or more data collectors apply coding criteria when abstracting the same set of charts. This helps to identify any discrepancies in data collection practices and ensures that the information being gathered is reliable and valid.

In a reliability study, the data collectors will independently review the same charts and compare their findings to see if they have reached the same conclusions consistently. If variations occur, this could indicate a need for further training or adjustments in coding guidelines to ensure uniformity.

The term "reabstracting study" generally refers to a specific type of reliability study where the same data is abstracted a second time, often to validate the initial results. However, the core focus of the reliability study is more general, encompassing the idea of examining the consistency between coders. Thus, it can be concluded that while a reabstracting study is a form of a reliability study, the essence of the question pertains to reliability itself.

This clarity helps to reinforce the importance of maintaining high standards in data abstraction processes in cancer registries, ensuring that the information used for research and treatment planning is trustworthy.