PROC Logisitc no estimate output

Mruizv — Tue, 28 Feb 2023 00:53:46 GMT

Running proc logistic with a categorical variable getting 0 as estimate for the parameters, not sure what is wrong with the code.

data tonsils;
input virus $ size $ count ;
cards;
Carrier Normal 19
Carrier Slightly 29
Carrier Very 24
NonCarrier Normal 497
NonCarrier Slightly 560
NonCarrier Very 269
;

proc logistic data=tonsils;
class size (ref='Normal') / order=data param=ref ;
model virus=size / lackfit cl;
output out=predict pred=prob reschi=pearson resdev=deviance;
Title "Virus=Tonsil size";
run;

Re: PROC Logisitc no estimate output

Ksharp — Tue, 28 Feb 2023 11:34:54 GMT

/*
I think you missed FREQ statement.
*/
data tonsils;
input virus $ size $ count ;
cards;
Carrier Normal 19
Carrier Slightly 29
Carrier Very 24
NonCarrier Normal 497
NonCarrier Slightly 560
NonCarrier Very 269
;

proc logistic data=tonsils;
freq count;
class size (ref='Normal') / order=data param=ref ;
model virus=size / lackfit cl;
output out=predict pred=prob reschi=pearson resdev=deviance;
Title "Virus=Tonsil size";
run;

topic Re: PROC Logisitc no estimate output in SAS Programming

PROC Logisitc no estimate output

Re: PROC Logisitc no estimate output