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A 描述分布指标 A_6 何为疾病率、构成比、比? 疾病率(rate)与疾病概率既有相同之处,又有不同。严格地讲,率是指一种现象改变的速度,或更精确地说,率是每单位时间变化的瞬时测量值。例如,某病每个月发生10例,即可以按发生疾病的人群大小的函数来表示。1000人口中每月发生10例病人与100000人口中每月发生10例病人就不同,如果用某一时间内相对于人群大小的率来表示,更能够反映人群的疾病危险性的大小,即在较小人群中发生的某种疾病或死亡的变化,比在较大人群中发生相同的疾病或死亡的变化,危险性更大,这就是采用疾病率(或死亡率)作为测量指标的主要目的。如果只看疾病或死亡的例数,而不看发生这些疾病或死亡的人口数,会导致谬误。
A describes the distribution of indicators A_6 What is the disease rate, composition ratio? The disease rate (rate) and the disease probability both the same place, there are differences. Strictly speaking, rate refers to the rate at which a phenomenon changes, or more precisely, the rate is an instantaneous measure of change per unit of time. For example, a disease occurs 10 times a month, which can be expressed as a function of the size of the population in which the disease occurs. 1000 population monthly occurrence of 10 patients and 100000 population of 10 patients per month is different, if used in a time relative to the size of the population rate to better reflect the size of the crowd’s disease risk, that is, at The risk of a disease or death change occurring in a smaller population is more dangerous than changes in the same disease or death occurring in a larger population. This is the primary purpose of using the disease rate (or mortality) as a measure of . If we only look at the number of diseases or deaths, not the number of people who have those diseases or deaths, it will cause fallacies.