2 level model (logistic regression, IGLS)
Posted: Wed Apr 13, 2011 11:10 am
Hello
I'm trying to run a 2 level model with a binary response (logistic regression, IGLS). I have no problems when the predictors are level 1 variables (categorical or continuous). However, when trying to run models with level 2 predictors (all continuous data) I encounter the following problems.
Sometimes the model keeps running, so no B and SE are provided. A proposed solution was to allow the level 2 variance to become negative. This solved the problem in some cases. In other cases I recieved the following error messages:
'V gone -ve definite for block 2 iteration aborted (random pass) (moni)' OR '1.#QO'. In the forum I've read that the model might not work for all combinations of predictors / responses. Is this true? Is there no solution for this?
Furthermore, I wonder if it is OK to allow the variance to become negative as the obtained results differ from the results obtained in SPSS?
Thanks in advance!
Best regards
Jelle
I'm trying to run a 2 level model with a binary response (logistic regression, IGLS). I have no problems when the predictors are level 1 variables (categorical or continuous). However, when trying to run models with level 2 predictors (all continuous data) I encounter the following problems.
Sometimes the model keeps running, so no B and SE are provided. A proposed solution was to allow the level 2 variance to become negative. This solved the problem in some cases. In other cases I recieved the following error messages:
'V gone -ve definite for block 2 iteration aborted (random pass) (moni)' OR '1.#QO'. In the forum I've read that the model might not work for all combinations of predictors / responses. Is this true? Is there no solution for this?
Furthermore, I wonder if it is OK to allow the variance to become negative as the obtained results differ from the results obtained in SPSS?
Thanks in advance!
Best regards
Jelle