topic Output parameter names for zero-inflated negative binomial regression in proc genmod? in SAS Enterprise Guide

Output parameter names for zero-inflated negative binomial regression in proc genmod?

RobertWF1 — Fri, 07 Jan 2022 23:03:46 GMT

I'm running a zero-inflated negative binomial regression model with proc genmod and would like to output the parameter names.

I think the mean (or lambda) =p and zero-inflation constant = pzero, but can't find the output name for the dispersion parameter in the documentation (https://support.sas.com/documentation/cdl/en/statug/68162/HTML/default/viewer.htm#statug_genmod_syntax24.htm).

proc genmod data =dataset;
  	model y = / dist=zinb;
  	zeromodel / link = logit;
	output out=ZINBFit p=lambda pzero=pzero dispersion(?)=k;
run;

Re: Output parameter names for zero-inflated negative binomial regression in proc genmod?

sbxkoenk — Sat, 08 Jan 2022 00:55:54 GMT

Hello,

With

ODS OUTPUT

statement , you can capture a table that is in your output window (Results) in a data set.

Use

ODS TRACE ON;

before your PROC GENMOD statement to know about the name of the output object. The names of all output objects (tables and graphs) are published in the LOG.

If the table | output object you are interested in (because it contains the dispersion) is called ABC, then do :

ODS OUTPUT ABC = WORK.DISPERSION;

Cheers,

Koen