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🌱 來自: Huppert’s Notes

Prevalence vs. Incidence🚧 施工中

Prevalence vs. Incidence

•   Prevalence: Total cases in a population at a given time/total population (↓Prevalance can be due to more prevention or more treatment; ↑Prevalance if those living with the disease have a longer lifespan)

•   Incidence: New cases/total in population at risk. Only prevention (not treatment) decreases incidence, since the total population at-risk excludes anyone who is already sick