I was asked
and unsure if there is a way to do this in one code rather than manually counting or calculating. For number one I calculated 5 by hand looking at the variables but stuck on the last two bc sas says the dataset is too large?
proc freq data= DEMOMED ; where htype = 'Hemophilia B'; run;
To do the first with code, query DICTIONARY.COLUMNS in PROC SQL.
For the second, try
proc freq data=demomed;
tables htype;
run;
For the third, see
proc sql;
select max(reg_date)
from demomed;
quit;
To do the first with code, query DICTIONARY.COLUMNS in PROC SQL.
For the second, try
proc freq data=demomed;
tables htype;
run;
For the third, see
proc sql;
select max(reg_date)
from demomed;
quit;
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