这个词是什么意思？
The proportion of survivors in a group, e.g., of patients, studied and followed over a period, or the proportion of persons in a specified group alive at the beginning of a time interval who survive to the end of the interval. It is often studied using life table methods.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D015996 · MeSH 2026。
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