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SASInstitute A00-282 Exam Syllabus Topics:

SASInstitute Clinical Trials Programming Using SAS 9.4 Sample Questions:

Question 1

A subject visit data set (Visits) includes variables for subject ID (SubjID) and visit date (VisitDT).
Which DATA step creates a data set with one record per subject and creates a variable (Visits) that computes the total number of visits for that subject?

A. proc sort data=Visits out=SortVisits;
by SubjID VisitDT;
run;
data VisitCount;
set SortVisits;
by SubjID VisitDT;
if first.SubjID then Visits=0;
else if last.SubjID then output;
else Visits+1;
keep SubjID Visits;
run;
B. proc sort data=Visits out=SortVisits;
by SubjID;
run;
data VisitCount;
set SortVisits;
by SubjID;
if first.SubjID then Visits=0;
Visits+1;
if last.SubjID then output;
keep SubjID Visits;
run;
C. proc sort data=Visits out=SortVisits;
by SubjID VisitDT;
run;
data VisitCount;
set SortVisits;
by SubjID VisitDT;
if first.SubjID then Visits=0;
if last.SubjID then output;
Visits+1;
keep SubjID Visits;
run;
D. proc sort data=Visits out=SortVisits;
by SubjID VisitDT;
run;
data VisitCount;
set SortVisits;
by SubjID VisitDT;
if first.SubjID then Visits=0;
else if last.SubjID then output;
Visits+1;
keep SubjID Visits;
run;

Question 2

A SAS report procedure results in the log below.

What should you add to the PROC REPORT to address the blue note in this log?

A. Specify COLWIDTH= option with a value large enough to print all values in the data
B. Use DEFINE statements with the WIDTH= option set large enough to print all values for each variable
C. Use DEFINE statements where FLOW is specified for each numeric variable
D. Use a FORMAT statement with formats large enough to print all values for each numeric variable

Question 3

The following SAS program is submitted:

Which value does variable X contain?

A. the date value 01011960
B. the character value "01Jan1960"
C. the numeric value 0
D. the code contains a syntax error and does not execute.

Question 4

The following SAS program is submitted:
proc univariate date=work.STUDY; by VISIT; class REGION TREAT; var HBA1C GLUCOS; run; You want to store all calculated means and standard deviations in one SAS data set.
Which statement must be added to the program?

A. output mean std;
B. output out=WORK.RESULTS mean=m1 m2 std=s1 s2;
C. ods output out=WORK.RESULTS mean=m1 m2 std=s1 s2;
D. ods output mean=m1 m2 std=s1 s2;

Question 5

Review the following procedure format:

What is the required type of data for the variable in this procedure?

A. Categorical
B. Treatment
C. Character
D. Continuous

Solutions: