[EpiData-list] Question re defining a new variable in EpiData Analysis

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Wed May 30 21:00:26 CDT 2012

I am a relatively new EpiData user and am now using EpiData Analysis.
In EpiData Analysis I would like to create a new variable which will be the number of days between two dates which I have collected in my EpiData dataset.  I have started with "define" and the name of the new variable and the new variable will be a numeric variable of length 4. i.e:
define smeartoreg1 ####
However, I am having difficulty with the code for defining the number of days between two existing dates and would appreciate some advice on this. I think I am making a simple mistake that can easily be fixed. 
Many thanks.
Kind regards, Kerri  		 	   		  

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