Translation

有病率 / 普及率 / 広がり / 一般性

Meaning

Prevalence is how common a disease, condition, behavior, or feature is in a population at a particular time or during a period. It is not the same as incidence, which counts new cases.

Examples

• その研究は高血圧の有病率を推定しました。
  The study estimated the prevalence of hypertension.
• 喫煙の普及率は年齢層によって異なります。
  The prevalence of smoking differs by age group.