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临床医学研究中为了评价某种治疗方法或药物对某种疾病的治疗效果,往往采用生存分析方法。所谓“生存时间”的含义很广,可以定义为某个起始事件到达某个终点事件所经历的时间跨度。例如从疾病确诊到死亡;从对某疾病的治疗到痊愈;放置某种避孕环到脱坏或怀孕等。 1 生存分析的内容 ①计算生存率S(t)、中数生存期,评价疗效; ②比较不同处理的生存率S(t)有无差异;
In order to evaluate the therapeutic effect of a certain treatment method or drug on a certain disease, clinical medical research often uses a survival analysis method. The so-called “time to live” has a wide meaning and can be defined as the span of time that a start event reaches an end event. For example, from the diagnosis of the disease to death; from the treatment of a certain disease to recovery; the placement of a certain type of contraceptive ring to remove or pregnancy. 1 Content of survival analysis 1 Calculate the survival rate S (t), the median survival period, evaluate the efficacy; 2 Compare the survival rate S(t) of different treatments.