Creating new variables

[freebird2008]

How do I subtract two columns of data in sas and use that data to create a new variable? Also I am dealing with time data.

 

[vinux]

It is a simple question or I didn't get your question.
If you wanted to create difference of two columns, use data step. and create new variable as the difference of two coulmns.

 

[Mahi]

In case you want to find the difference between two date variables(time data) then you should use INTCK() function.

Also check for INTNX() to calculate the difference of a date variable for fixed number of intervals.

Mahi..