noun
prevalence rate; prevalence
Medical and epidemiological term for the proportion of a population with a condition at a given time.
この地域の糖尿病の有病率は年々上昇している。
The prevalence rate of diabetes in this region is rising year by year.
有病率を正確に把握するためには大規模な調査が必要だ。
A large-scale survey is necessary to accurately determine the prevalence rate.