[EpiData-list] Relate example in Epidata

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Mon Dec 22 14:34:34 CST 2008

Hi Epidata members,
I am trying to figure out how the relate function works in Epidata. I am following the examples on the epidata website. I downloaded this zip file today: Relate example - Clinical Study with four forms
Working example of the structure for a Clinical study with a start, then by relating on id entering data into basic person information, sideeffects, status information and pre-study level. 
This example is giving me all kinds of errors. First, I thought that it was because the Start.Rec and Clinical Study.rec are the same. I excluded all the files starting with start.*.  This wasn't the case, I narrowed it down to the file controlvisit.rec. The error received is : The field id is KEY UNIQUE, but duplicate keys were found in records 1 and 2.
A second error pops up directly after the first one:
Access violation at address 004138D3 in module 'EpiData.exe' Read of address 00000000.
I am looking forward to learn more on how to solve this issue.
Happy Holidays!
Renate van Dorp, MSc, PhD
Perth District Health Unit
653 West Gore Street
Stratford, ON N5A 1L4
Tel: 519-271-7600 ext 246 
Fax: 519-271-2195
Email: rvandorp at pdhu.on.ca <mailto:rvandorp at pdhu.on.ca> 

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