Dear all,

I was wondering what the following error meant when using rreg:

"All weights went to zero"

"No observations"

What does it mean? And for future reference, how can I find error documentation in Stata if I encounter a unkown error?

Thanks!

I was wondering what the following error meant when using rreg:

"All weights went to zero"

"No observations"

What does it mean? And for future reference, how can I find error documentation in Stata if I encounter a unkown error?

Thanks!

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