[EpiData-list] Entering time and date for outbreaks

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Sun Feb 25 14:14:14 CST 2007

Hello everyone

I am after advice about the best way to record time and date
information when collecting information about food poisoning outbreaks,
given epidata does not have a time/date field. We want this information
to estimate incubation periods, in order to get clues about the likely

Incubation = time from when someone is exposed to the time they become
For example someone may eat a buffet meal at 7pm on 21 February and
become unwell at 1am on 22 February = incubation of 6 hours.

Current method
At the moment we:
a) enter information in two fields. OnsetDay is recorded in a date
field, and onsettime in a numeric field (####)
b) list the two fields (using epi info) to view the information
c) calculate incubation manually.

Is there a better/easier way to do this? Also what is the recommended
way for entering 24 clock time - should 7.30pm be 1930 or 19.30 

thanks very much


Christine Roseveare
Regional Public Health
570 9194
027 495 9671

The information contained in this email and
any attachments is confidential and may be
legally privileged. If you have received this
message in error, please notify the sender
immediately and remove all copies of the message,
including any attachments.  Any views or
opinions expressed in this email (unless
otherwise stated) may not represent those of
Hutt Valley DHB. 
Thank you.
** Disclaimer added by HVDHB **

More information about the EpiData-list mailing list