The data set PAIN contains hypothetical data for a clinical trial of a drug therapy to control pain. The clinical trial investigates whether adverse responses increase with larger drug doses. Subjects receive either a placebo or one of four drug doses. An adverse response is coded No or Yes. The data are recorded as cell counts instead of as one observation per subject. The variable Count contains the frequencies for each drug dose and response combination.
options nodate pageno=1 linesize=80 pagesize=72;

data pain;
   input Dose Adverse $ Count @@;
0 No 26 0 Yes  6
1 No 26 1 Yes  7
2 No 23 2 Yes  9
3 No 18 3 Yes 14
4 No  9 4 Yes 23