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15 Nov
2011
15 Nov
'11
9:01 a.m.
Dear ALL
I have a relational (Epidata entry) data base which I have data for over one year follow up of patients. I would like to analyse in Epidata analysis and check the Blood pressure, blood sugar readings......at every six months follow up for each patient since they were enrolled.
How do I get to select six month, twelve month....visits for each patient form their date of enrollment. ( in my database I have var: entrydate at registration and visitdate on each visit)
Thank you
Walter