,筛检,Screening,疾病自然史(NaturalHistoryofDisease),目录,概述筛检试验的评价筛检效果的评价,IntroductionEvaluationofscreeningtestEvaluationofeffectiveness,Outline,筛检是运用快速、简便的试验、检查或其他方法,将健康人群中那些可能有病或缺陷,但表面健康的人、同那些可能无病者鉴别开来,Screeningisdefinedastheuseofquickandsimpletestingprocedurestoidentifyandseparatepersonswhoareapparentlywell,butwhomaybeatriskofadisease,fromthosewhoprobablydonothavethedisease.,第一节概述Introduction,筛检试验流程图Flowdiagramofscreeningtest,筛查方法的评价与选择程序Proceduresofevaluationandselectionforscreeningtest,金标准(goldst