To assist Kate with the appending problem we must know more:

a. Are you using EpiData Entry or EpiData Analysis b. Which version and build See about box or in analysis: Version c. Show a listing of the variable types of the four variables in each of the two files. To do this: In EpiData Entry: Document - file structure In Analysis: read the file and then issue the command "var" Cut and paste into for the relevant four variables into a new mail to the epidata-list

Regards

Jens Lauritsen EpiData Association