topic Re: Proc GAM: Using Weights in Statistical Procedures

Proc GAM: Using Weights

pkfamily — Tue, 31 Oct 2017 20:44:44 GMT

Is it possible to use weights in the Generalized Additive Models procedure in SAS 9.4? It doesn't seem like the weight statement is available like it is in proc GENMOD or proc GLM. Perhaps it's due to a statistical reason I'm not fully grasping... Thanks

Re: Proc GAM: Using Weights

Reeza — Tue, 31 Oct 2017 18:02:53 GMT

There is the FREQ statement but that would require integer weights.

There is the GAMPL procedure, which uses different methodology but does support weights. http://documentation.sas.com/?docsetId=statug&docsetTarget=statug_hpgam_overview02.htm&docsetVersion=14.2&locale=en

Re: Proc GAM: Using Weights

pkfamily — Tue, 31 Oct 2017 18:12:22 GMT

Thanks! I'll look into GAMPL, as I will likely use fractional weights in my future analyses. I still would like a method to implement weights in GAM since all my past analyses were performed in that proc.

Re: Proc GAM: Using Weights

Rick_SAS — Tue, 31 Oct 2017 20:35:32 GMT

I suggest that you do not use PROC GAM anymore. Switch to using PROC GAMPL, which is much more efficient. You can read an overview and see an example of PROC GAMPL.