... geometric mean几何均数 case fatality rate(or case mortality)病故率 arithmetic mean数学均数 ...
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病故率
Mortality rate
以上为机器翻译结果,长、整句建议使用 人工翻译 。
研究背景及目的:恶性肿瘤发病率有逐年升高趋势,因肿瘤病故居儿童死因第二位。
Background and objective: the incidence of malignant tumors has increased gradually, which becomes the second causation of children death now.
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