我在用spss做logistic regress时，结果出现以下：
Warnings
Estimation failed due to numerical problem. Possible reasons are: (1) at least one of the convergence criteria LCON, BCON is zero or too small, or (2) the value of EPS is too small (if not specified, the default value that is used may be too small for this data set).
只有少部分数据被读入了，miss case达到92%
为什么会这样？ 该如何解决？