data respire2;
   input treat $ outcome $ @@;
   datalines;
placebo f placebo f  placebo f
placebo f placebo f
placebo u placebo u  placebo u
placebo u placebo u  placebo u
placebo u placebo u  placebo u
placebo u
test    f test    f  test    f
test    f test    f  test    f
test    f test    f
test    u test    u  test    u
test    u test    u  test    u
test    u test    u  test    u
test    u test    u  test    u
test    u test    u  test    u
test    u test    u  test    u
test    u test    u
;
run;