Hi!
I’m having a problem that may be more of a statistics issue than a Stata issue. I am getting an error (a dot) when estimating the third level's Random-effects Standard Error in a Multilevel Model. Moreover, estimations change everytime I sort the database in a different way, sometimes I get results very close to cero, but sometimes Stata cannot even calculate the Standard error (see example). Why could that be happening?
Thanks so much,
Catalina
I’m having a problem that may be more of a statistics issue than a Stata issue. I am getting an error (a dot) when estimating the third level's Random-effects Standard Error in a Multilevel Model. Moreover, estimations change everytime I sort the database in a different way, sometimes I get results very close to cero, but sometimes Stata cannot even calculate the Standard error (see example). Why could that be happening?
| Random-effects Parameters | Estimate | Std. Err. | [95% Conf. | Interval] |
| id_uds: Identity | ||||
| var(_cons) | 2.47e-23 | . | . | . |
| id_docente: Identity | ||||
| var(_cons) | .0285614 | .00215 | .0246436 | .0331021 |
| var(Residual) | .0367865 | .0010164 | .0348474 | .0388335 |
Catalina
