使用地道的英文数据术语对科研论文至关重要(下)
Prevalence/incidence
“Prevalence” 指的是某一时刻某一特定人群中某个状况发生的比例,用来表明这个状况的普遍性
(如 “5/1,000 Americans are affected by thisdisease”)。
与之相比,”incidence” 指的是某一时刻某一特定人群中某个状况新出现的比例,反映的是风险(如 “3/1,000 Americansdevelop this disease each year”)。
[size=18.0pt]Proportion/ratio/rate
“Proportion” 描述整体的一部分,”ratio” 描述两个相同单位的数量之间的关系,而 “rate” 是不同单位的两个数量间的关系。举例说明:
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The proportion of tissue samples that exhibitedpathological changes was 6 out of a total of 9 samples.
·
Distilled water and 10X PBS were mixed at a ratio of9:1 to form 1X PBS.
·
The rate of sampling was 5 measurements perminute.
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