number needed to harm
A variety of woven lace in which the weft threads are twisted around the warp in a particular way.
The number of people, statistically, who must be exposed to something in order for one of them to experience an adverse effect.
plural of seatpin
plural of ground cruncher
公衆衛生の分析担当者は、複数の地域の曝露データを検討した後、新しい殺虫剤について、有害影響が1人生じるまでに曝露が必要な人数を公表しました。
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