dprobit continues to work but, as of Stata 11, is no longer an official part of Stata.  This is the
    original help file, which we will no longer update, so some links may no longer work.
See margins for a recommended alternative to dprobit.

夏目贵志 发表于 2016-3-28 07:49
如果可能的话建议不要再使用这个命令了。使用margins命令。

至于共线性的问题，可以参考这里说的几种方 ...