cumulative incidence

synonym: incidence proportion
https://doi.org/10.1351/goldbook.15615
Number or proportion of individuals in a group who experience the onset of a health-related event during a specified time interval.
Note: This interval is generally the same for all members of the group, but, as in lifetime incidence, it may vary from person to person without reference to age.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1200 [Terms] [Paper]