03-02-2018 02:12 AM
I'd like to create a variable called "Length of stay" by subtracting the separation date (sepdate) from the admit date (addate) in the hosp file.
I wrote :
los= sepdate - addate;
but it does not work.
03-02-2018 03:17 AM
Subtracting strings is not possible. You have to convert the strings to sas dates using input function. You should check why those "dates" have not been converted to sas dates during data import.
data coolDates; set have(rename=(appDate=strAppDate sepDate=strSepDate)); length appDate sepDate 8; format appDate sepDate yymmdds10.; appDate = input(strAppDate, yymmdd10.); sepDate = input(strSepDate, yymmdd10.); /* Calculations ...*/ drop strAppDate strSepDate; run;
03-02-2018 03:59 AM
03-02-2018 05:55 AM
"does not work" is a VERY POOR description of your problem. Supply the log, and give a clear description how the result you got does not meet your expectations. Don't force us to pry important information out of your nose.