SAS_Institute
A00-280 · Question #44
A00-280 Question #44: Real Exam Question with Answer & Explanation
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Question
A Statistical Analysis Plan defines study day as the number of days between the visit date and the date of randomization plus one day. The following SAS program is submitted using a macro from the project's library:
data VS_SD ;
set VS ;
label rdt = "Randomization Date" ;
label vdt = "Visit Date" ;
VSDY = %studyday(rdt,vdt) ;
run ;
How is the STUDYDAY macro defined?
Options
- A%MACRO studyday(rand, visit); %vdt.?rdt. + 1 %MEND studyday;
- B%MACRO studyday(rand=, visit=); %vdt. - %rdt. + 1 %MEND studyday;
- C%MACRO studyday(rand, visit); &visit. - &rand. + 1 %MEND studyday;
- D%MACRO studyday(visit=, rand=); &visit. - &rand. + 1 %MEND studyday;
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