Proc Mixed vs Proc Panel

niam — Tue, 22 Oct 2013 20:06:11 GMT

Hello;

I have an unbalanced panel dataset which consists of 434 observations of about 300 companies over 6 years. Among these companies, 197 of them only appear once in my dataset. The remaining companies appear at least twice in different time periods.

I know that PROC PANEL requires each cross sectional observation to appear at least in two different time periods and thus the 197 companies in my dataset which only appear once, can not be used in PROC PANEL. One of m colleagues suggested that instead of dropping those 197 observation, I run a random effects model with PROC MIXED. I am not sure if PROC MIXED has the same requirement for panel data regressions. Would you please let me know if I can retain those 197 companies and use PROC MIXED to run a random effects model with it? If yes, what is the rationale behind it? Why it is possible to use those observations in PROC MIXED and not PROC PANEL?

Re: Proc Mixed vs Proc Panel

ZL888 — Tue, 17 Jan 2017 21:09:06 GMT

Hi Niam, I am interested in learning more about the differences in random effect modeling under these two procedures as well. Did you find out the answer to your initial question? Thanks!

topic Proc Mixed vs Proc Panel in SAS Procedures

Proc Mixed vs Proc Panel

Re: Proc Mixed vs Proc Panel