在医学科研资料的对比分析中,常需要以“率”(即频率指标)来表示,用以说明某种现象发生的频率或强度,即表示某种现象在一定条件下实际发生的例数与可能发生此现象的总例数之比.“率”在医学研究的分析中应用较为广泛,但在应用中,有些作者和报刊常把病死率与死亡率、患病率与发病率混淆不清,屡见错误,值得注意.一、病死率与死亡率病死率与死亡率是医用统计学上常用的两个含义根本不同的相对指标.死亡率一般是指一年内某病的死亡人数,占该年平均人 In the comparative analysis of medical scientific research data, it is often necessary to use “rate” (ie, frequency index) to indicate the frequency or intensity of a certain phenomenon, that is, the number of actual occurrences of a certain phenomenon under certain conditions. The ratio of the total number of cases in which this phenomenon may occur. “Rate” is widely used in the analysis of medical research, but in application, some authors and newspapers often confuse mortality with mortality, prevalence and incidence. , often see errors, it is worth noting. First, the mortality and mortality Mortality and mortality are commonly used in medical statistics, two meanings are basically different relative indicators. Mortality generally refers to the number of deaths in a disease within one year, accounting for Average person of the year