PROC LOGISTIC DATA=martin;
  CLASS Year(Ref="2001" PARAM=REF) TrustLG;
  MODEL TrustLG = Year / LINK=CLOGIT;
  EFFECTPLOT / INDIVIDUAL POLYBAR;
  ODDSRATIO Year / CL=PL;
RUN;

PROC LOGISTIC DATA=martin;
  CLASS Educ(REF="1" PARAM=REF) Year(Ref="2001" PARAM=REF) TrustLG;
  MODEL TrustLG = Year|Educ / LINK=CLOGIT;
  ODDSRATIO Year / CL=PL;
RUN;