noun
positivity rate; rate of positive results
Commonly used in medical and statistical contexts, especially for test results (e.g., COVID-19 PCR tests).
先週のPCR検査の陽性率は5％だった。
The positivity rate of PCR tests last week was 5%.
陽性率が高い地域では、追加の対策が必要だ。
In areas with a high positivity rate, additional measures are necessary.
陰性率 is the negativity rate, the opposite of 陽性率.
Compound of 陽性 (positive) + 率 (rate).