Which statement correctly describes an aspect of a Phase II clinical trial?

The following SAS program is submitted:

Which types of variables are DayofMonth, MonthofYear, and Year?

Review the following procedure code:
proc ttest data=DATA1;
class GROUPVAR1;
var VAR1;
run;
Which variable is most appropriate to be analyzed as variable VAR1?

Given the data set WORK.BP with the following variable list:

The following SAS program is submitted:
ods select ExtremeObs;
proc univariate data=WORK.BP;
var DIABP;
id PTNO;
run;
Which type of output will be created by the program?

In a study, inclusion criteria required patients be between 18 and 65. Patients will be analyzed in 2 age groups: group one is subjects who are under 36 years of age and group two is subjects who are 36 years of age or older.
Which statements properly assign age group, and writes an error message to the log for any patient with an out of range age value?