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第二讲相对数在初级卫生保健中的应用相对数是初级卫生保健统计中应用最广的一种统计方法,并且在应用中常常容易混淆,造成错误。一、相对数的概念传染病的发病是绝对数,它说明某地传染病实际发生的绝对水平。但仅使用绝对数,还不能进行深入地分析比较。例如甲、乙两地腹泻流行,甲地发病300人,乙地发病250人。甲比乙多发病50人,但不能肯定甲地麻疹发病情况较为严重。因为要比较两地发病的严重程度,需要考虑两地人口数。若甲地人口数为300000人,
The second is the use of relatives in primary health care. The relative number is the most widely used statistical method in primary health care statistics and is often confused and erroneous in applications. First, the concept of relative number The incidence of infectious diseases is the absolute number, which shows the absolute level of the actual occurrence of infectious diseases in a certain place. But using only absolute numbers, it is not yet possible to conduct an in-depth analysis and comparison. For example, A and B diarrhea prevalence, 300 cases of A site, B site incidence of 250 people. A more than 50 cases of B, but can not be sure that the incidence of measles A more serious. Because of the comparative severity of the two diseases, we need to consider the population of the two places. If a population of 300000 people,