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预后研究是关于疾病各种结局发生概率及其影响因素的研究 ,其评价原则包括 :1病例来源是否交代清楚 ?这些病例的临床特征能否代表该病的总体 ?2纳入对象的零点时间是否相同 ?3研究对象的诊断是否有误 ?是否都用当前能获得的最佳诊断方法确定为有病 ?4因果的时间顺序是否肯定 ?5
Prognosis research is about the probability of various outcomes of the disease and its influencing factors. The evaluation principles include: 1 whether the source of the case is clearly explained. Can the clinical features of these cases represent the overall status of the disease? 2 Is the zero time of the subjects included the same? ?3 Are there any errors in the diagnosis of the study? Are they determined to be diseased using the best diagnostic method currently available? 4 Is the time sequence of cause and effect positive?5