Programming the statistical procedures from SAS

Testing all combinations of a model statement (proc logistic)

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Frequent Contributor
Posts: 82

Testing all combinations of a model statement (proc logistic)

     I seem to remember that there is a way to test all possible combinations of a model all in one statement.

so lets say

proc logistic data=x;

model y= a b c d e f;

run;

it would give you the results for:

a

b

c

d

e

f

ab

ac

etc....

Am I imagining things?

Respected Advisor
Posts: 3,773

Re: Testing all combinations of a model statement (proc logistic)

selection=score

SAS Super FREQ
Posts: 3,307

Re: Testing all combinations of a model statement (proc logistic)

You can build a model with all interaction terms by using the "bar notation" such as

model y = a | b | c | d;

or restrict to only second order interactions with

model y = a | b | c | d @2;

See SAS/STAT(R) 9.3 User's Guide

As Data Null says, you can use variable selection to select a model that incorporates a subset of the terms listed on the model statement.

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