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Description of the problem with effect coding When you have a categorical independent variable with more than 2 levels, you need to define it with a CLASS statement. In PROC GLM the default coding for this is dummy coding. In PROC LOGISTIC, it’s effect coding. To me, effect coding is quite unnatural. Effect coding compares […]
| This post was kindly contributed by SAS blog - statisticalanalysisconsulting.com - go there to comment and to read the full post. |