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The VISIT data set is multiple records per subject, sorted by usubjid vistdtc vistm and contains the following variables:
The DEATH data set is one record per subject, sorted by usubjid vistdtc vistm and contains the following variables:




Which program will combine the DEATH and VISIT data sets by matching records?

data data_1;
merge death visit;
by usubjid vistdtc vistm;
run;

 
data data_1;
merge death visit;
run;

 
 data data_1;
set death visit;
by usubjid vistdtc vistm;
run;

 
data data_1;
merge death visit;
by usubjid vistm vistdtc;
run;
 
Answer
Explanation: 
 
 
 
QUESTION NO: