What is one indicator that a Prioritized Review queue is ready for validation?

A decline in the relevance rate progress line is a strong indicator that a Prioritized Review queue is ready for validation because it reflects that the review process may have reached a plateau. This decline suggests that the reviewers are no longer discovering new relevant documents, indicating they may have thoroughly examined the documents in the queue. When the relevance rate stabilizes at a certain level, it signals that the highest-ranking documents have likely been reviewed and that the queue’s contents do not require further review. This can prompt a validation of the review process to ensure that the coding accuracy aligns with the findings.

In the context of the other options, a sharp increase in the relevance rate would typically suggest that the review is still ongoing, as it indicates the discovery of relevant documents. Similarly, an increase in unreviewed documents with a high rank suggests that there are still significant documents that need attention. Lastly, a rise in already-coded documents doesn't inherently indicate that the queue is ready for validation; it instead may highlight ongoing coding efforts. Thus, the decline in the relevance rate progress line is the most reliable indicator for determining readiness for validation.