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医学研究中所收集到的计数资料本身是绝对数,它反映事物的实际水平。为便于相互比较起见,需要由绝对数计算相对数。常用的相对数是构成比和率。如果比和率的概念混淆不清,无疑将影响文献的科学性,甚至得出错误的结论。本文就《广州医药》等84年1～5期所载文章中有关这方面比较明显的错误分析如下,以提请大家注意。一、把构成比当率: 构成比(constituent ratio)表示事物内部各构成部分所占的比重。率(rate)说明某现象发生的频率和强度。比=(事物内部某一构成部分的个体数)/(事物各构成部分个体数的总和)×100 率=(某
The count data collected in medical research is itself an absolute number, which reflects the actual level of things. For ease of comparison, the relative number needs to be calculated from the absolute number. Commonly used relative number is the composition ratio and rate. If the concept of ratio is confused, it will undoubtedly affect the scientific nature of the literature and even lead to erroneous conclusions. This article on “Guangzhou Medicine” and other articles contained in 1984 1-5 period in this area more obvious error analysis below, to draw your attention. First, the composition ratio when the ratio: (constituent ratio) that the internal components of the proportion of things. Rate Indicates the frequency and intensity of a phenomenon. Ratio = (number of individuals within a component of a thing) / (sum of individual components of a thing) × 100 rate = (a