prevalence

普及度、広がり

あるものがどれほど一般的か、広く見られるかという程度。

やさしい英語で： How common or widespread something is.

• The report shows the prevalence of poverty.
• They studied the prevalence of online shopping.
• We were surprised by the prevalence of this belief.

使い方： the prevalence of something (The study measured the prevalence of bullying.)

類義語： frequency, widespread presence

よく使う表現： prevalence of something, high prevalence, increasing prevalence

有病率

ある時点で、集団の中で特定の病気にかかっている人の割合。

やさしい英語で： The share of people in a group who have a particular disease at a particular time.

• The survey measured the prevalence of diabetes.
• Disease prevalence was higher among older adults.
• Researchers compared infection prevalence in the two towns.

使い方： the prevalence of a disease (They estimated the prevalence of asthma in children.)

よく使う表現： disease prevalence, prevalence of something, prevalence rate