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构成比(structural relative number)表示事物内部各组成成分的计数值或测量值所占该事物全部组成的计数总值或测量总值的百分比。率(rate)则是一种事物和现象发生的频率或强度。其中发病率(incidence rate)表示一定时期内,在可能发生某病的一定人群中,新发生的该病病例数;患病率(prevalence rate)指在某时点接受医学检查时,可能发生某病的全体受检人群中被发现的某病现患新、旧病例数;死亡率(mortality)说明综合因素对一定时间和空间范围内的全部人群生命威胁程度的统计量,即死亡病例数;某病病死率(case fatality)是表达某病对该病患者人群生命威胁程度的统计量。某病病死率应注意与某病死亡率相区别,前者是针对患病人群而言,后者则是指全部人群因该病死亡水平。
A structural relative number is the percentage of the total or total measure of the total number of counts or values of the components within a thing. Rate is the frequency or intensity of a thing and phenomenon. Incidence rate (incidence rate), said a certain period of time may occur in a certain population of patients, the number of new cases of the disease; prevalence rate (prevalence rate) refers to a point in time when medical examination may occur some The number of new and old cases of a disease that is found in all the tested patients of the disease; the mortality is a statistic that indicates the degree of the life threatening of the comprehensive factors to all the population within a certain time and space range, that is, the number of deaths; Case fatality is a measure of the degree of life-threatening that a disease presents to the patient population. Disease mortality should pay attention to the mortality of a particular difference, the former is for the affected population, the latter refers to the total population due to the disease death level.