蓝色 发表于 2012-2-13 15:25 
Examples
Setup
您好!请问您了解嵌套logit么?我回归结果显示note: 1 case (500 obs) dropped due to no positive outcome or multiple positive outcomes per case
no cases remain after removing invalid observations
跟help 里例子格式对照过,我觉得我的数据没有问题?请问您了解这是什么原因造成的么?