At present, the manager of a CDI program tracks two query metrics: case review volume and query rate. However, she is interested in gaining a bigger-picture view about the efficiency and effectiveness of CDS activities, such as clinical documentation queries. Considering this goal, which of the following data points would provide the greatest benefit if added to the metrics she already tracks? Group of answer choices Number of CDS hours spent in provider education sessions Number of provider responses Number of CDS hours spent developing CDI-related training materials Number of cases reviewed by the CDSs