Which analytic used in healthcare is calculated as a proportion of new cases compared to...

The incidence rate is a healthcare analytic calculated as the number of new cases of a condition divided by person-time units at risk. In data-driven decision making, this metric is essential for understanding how quickly new cases occur within a population over time.

Person-time accounts for both the number of individuals and the duration they are observed, making the incidence rate particularly useful when populations are dynamic or when observation periods vary. This distinguishes incidence rate from cumulative incidence, which measures new cases over a fixed population and time period without person-time adjustment.

Prevalence measures existing cases at a point in time, and morbidity is a broader term describing illness burden rather than a specific rate calculation.

Because the question explicitly references new cases compared to person-time units, the correct answer is B, incidence rate.