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saza
Quartz | Level 8

I was asked 

  1. How many character variables are there in the DEMOMED dataset?
  2. What percent of subjects have hemophilia B (HTYPE)? (5 points) 
  3. What is the latest date of registration (REG_DATE)?

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;

 

1 ACCEPTED SOLUTION

Accepted Solutions
Kurt_Bremser
Super User

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;

 

View solution in original post

1 REPLY 1
Kurt_Bremser
Super User

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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