I was trying to run a mixed model with Stata 15, however failed to do so with "not concave" error message.
The codes were simple:
Code:
mixed var1 var2 || id: var2
Thanks for any help in advance!
Yingyi
mixed var1 var2 || id: var2
mixed var1 var2 || id: matrix b = e(b) mixed var1 var2 || id:, from(b)
mixed var1 var2 || id:, iterate(20)
mixed var1 var2 || id: matrix b = e(b) mixed var1 var2 || id:, from(b)
mixed var1 var2 || id:, iterate(20)
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