"New Users" Are Confusing Our Counting: Reaching Consensus on How to Measure "Additional Users" of Family Planning.

FP2020's overarching goal is framed around the new metric of “additional users.” This measure inherently captures population-level change but has been conflated with other ambiguous metrics, such as “new users.” Therefore, we propose a standard set of terms to provide more consistent measurement. Although commonly used service-level metrics cannot be directly compared to the population-level metric of additional users, we describe 2 modeling approaches that can allow service-level data to inform estimates of additional users.