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(二)标准化法把两个类似资料的率进行比较时,在同一疾病的各种类型中,其治愈率或病死率常有差别。因此,如果两组病人在年龄、性别、病情轻重、疾病类型以及其它有关指标上具有不同的构成比,其总的发病率、治愈率、病死率等就不能直接相互比较。表3—4为甲、乙两院治疗某传染病的资料,其治愈率分别为48%与45%,甲院高于乙院;而从各型
(B) When the standardization method compares the rates of two similar data, the cure rates or the case fatality rates are often different among the various types of the same disease. Therefore, if the two groups of patients have different compositional ratios in terms of age, gender, severity, type of disease and other related indicators, the overall incidence, cure rate, mortality, etc. can not be directly compared with each other. Table 3-4 for the A, B hospital treatment of an infectious disease data, the cure rates were 48% and 45%, A hospital higher than hospital B; and from all types