data ex;
input
id y x sample;
cards;
1 0.8 1.3 1
2 0.5 0.5 1
3 0.3 0.3 1
4 0.1 0.5 1
5 0.6 0.7 1
6 0.8 1.4 1
7 0.2 1.0 1
8 0.3 0.8 1
9 0.1 0.6 1
10 0.3 0.4 1
11 0.2 0.2 2
12 0.6 0.6 2
13 0.0 0.5 2
14 1.0 1.0 2
15 0.8 1.3 2
16 0.7 1.1 2
17 0.1 0.1 2
18 0.2 1.0 2
19 0.5 0.8 2
20 0.0 0.5 2
;
run;
data ex1;
set ex(where=(sample=1));
set ex(where=(sample=2) rename=(y=y1 x=x1));
keep x y x1 y1;
run;
proc qlim data=ex1;
model y=x;
model y1=x1;
test y.x=y1.x1/wald;
run;


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