ODS Output CovB

[Recep]

Hello there;

I'm trying to obtain the "estimated covariance matrix of parameter estimators" by using PROC LOGISTIC:

proc logistic data=datain descending;
class chop;
model complication = age severity body_region mechanism transfer gcs sbp rr chop;
by _imputation_;
ods output ParameterEstimates = logitparms CovB = logitcovb;
run;

Even though CovB is an ODS table option according to the SAS documentation (https://support.sas.com/documentation/cdl/en/statug/63033/HTML/default/viewer.htm#statug_logistic_se...) I'm having a warning saying that:

"WARNING: Output 'CovB' was not created. Make sure that the output object name, label, or path is spelled correctly. Also, verify that the appropriate procedure options are used to produce the requested output object. For example, verify that the NOPRINT option is not used."

No problem for the ParameterEstimates.

Any ideas?

Thanks a lot in advance!

Recep

[ballardw · Accepted solution]

Does this fix the problem:

model complication = age severity body_region mechanism transfer gcs sbp rr chop/ covb;
ods output ParameterEstimates = logitparms;
ods output CovB = logitcovb;

[Recep]

I tried that. Unfortunately I still get the same warning...

[Recep]

Nevermind! I did not pay attention to the CovB option in the MODEL statement. It seems like it worked. I'll check the results. Thanks a lot!