[EpiData-list] How to keep data when modifying questionnaire

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Tue Apr 29 02:08:53 CDT 2008

Normally, it shoudn't be a problem when you add new variables without modifying the structure of the other variables.
Once the questionnaire has been modified, use the option 'Tools / revise data file'.  In case something goes wrong, a backup of the data (prior to modifications) is stored with '.OLD.REC' extension.

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De : epidata-list at lists.umanitoba.ca [mailto:epidata-list at lists.umanitoba.ca] 
Envoyé : lundi 28 avril 2008 13:13
À : epidata-list at lists.umanitoba.ca
Objet : [EpiData-list] How to keep data when modifying questionnaire

i started data entry and now need to add 2 new variables to the QES file, when i transfer the QES file into REC file, the old data disappeared, any tips how to avoid it?

Thank you in advance and best regards

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