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?

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?

Accepted Answer

C. %MACRO studyday(rand, visit); &visit. - &rand. + 1 %MEND studyday;

Answer

A. %MACRO studyday(rand, visit); %vdt.?rdt. + 1 %MEND studyday;

Answer

B. %MACRO studyday(rand=, visit=); %vdt. - %rdt. + 1 %MEND studyday;

Answer

D. %MACRO studyday(visit=, rand=); &visit. - &rand. + 1 %MEND studyday;

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…

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