population at risk

https://doi.org/10.1351/goldbook.15992
Persons who can and may develop an adverse health effect and who are potentially exposed to a substance under study. People already having chronic disease are excluded from the population at risk in studies of the incidence of the adverse effect.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1287 [Terms] [Paper]