NAHQ CPHQ Practice Exam 2026 - Free Certified Professional in Healthcare Quality Practice Questions and Study Guide

The denominator in calculating the incidence rate should represent the total number of cases that are being examined for the desired outcome or condition. In this scenario, you have 10 records that meet the criteria for review and 6 additional records that did not meet the criteria.

When determining the incidence rate, it is essential to focus on the number of cases that were actually reviewed under the designated criteria. The records that meet the criteria (10 in this case) are where the focus for calculating the incidence of an event or outcome occurs, as they represent the eligible cases relevant to the analysis.

The total number of cases reviewed, which influences the understanding and analysis of performance or outcomes related to the surgical department, is 10, as that’s where the interest lies for the specific measure being calculated. Therefore, choosing the 10 records as the denominator is the correct approach for determining the incidence rate in this scenario.