Time and CLASS Usage
/****************************************************************/
/* S A S S A M P L E L I B R A R Y */
/* */
/* NAME: SURPHCLT */
/* TITLE: Time and CLASS Usage */
/* PRODUCT: STAT */
/* SYSTEM: ALL */
/* KEYS: Time Variable, CLASS Variable, Time-Dependent */
/* PROCS: SURVEYPHREG */
/* DATA: */
/* SUPPORT: pumukh */
/* REF: PROC SURVEYPHREG, Time and CLASS */
/* MISC: */
/****************************************************************/
data Test;
input T Status A W S @@;
MirrorT = T;
datalines;
23 1 1 10 1 7 0 1 20 2
23 1 1 10 1 10 1 1 20 2
20 0 1 10 1 13 0 1 20 2
24 1 1 10 1 10 1 1 20 2
18 1 2 10 1 6 1 2 20 2
18 0 2 10 1 6 1 2 20 2
13 0 2 10 1 13 1 2 20 2
9 0 2 10 1 15 1 2 20 2
8 1 3 10 1 6 1 3 20 2
12 0 3 10 1 4 1 3 20 2
11 1 3 10 1 8 1 1 20 2
6 1 3 10 1 7 1 3 20 2
7 1 3 10 1 12 1 3 20 2
9 1 2 10 1 15 1 2 20 2
3 1 2 10 1 14 0 3 20 2
6 1 1 10 1 13 1 2 20 2
;
proc surveyphreg data=Test;
weight W;
strata S;
class A;
model T*Status(0)=A;
run;
proc surveyphreg data=Test;
weight W;
strata S;
class A;
model T*Status(0)=A;
if A=3 then A=2;
run;
proc surveyphreg data=Test;
class A;
model T*Status(0)=A X;
X=T*A;
run;
proc surveyphreg data=Test;
class A;
model T*Status(0)=A X1 X2;
X1= T*(A=1);
X2= T*(A=2);
run;
