[Epidata-list] Analysing Epidata rec file in epi 2002

epidata-list at lists.umanitoba.ca epidata-list at lists.umanitoba.ca
Fri Feb 27 01:29:32 CST 2004

Q: Why is Epi2002 breaking down on freq * with a file containing boolean

One question or aspect could be that field types <Y> in access (and
thereby epi2002)  are treated as having two values, either Y or N.

I have very little experience in using Boolean field types, but have
had problems when exporting one file for a colleague from access due to
the fact that all entered as Y were exported as Y and all others were
exported as N regardless of data were entered or not.

My suggestion is therefore:
a. make a small file in epi6 with the same three fields
b. enten in epi6 data - say 5 records
c. try the same freq * in epi2002 with that file

d. try with the "epidata" file in epi2002 to recode missing value to

tell us if what works and what does not. If it works send me the new
file and the one breaking down epi2002 and we will compare. 
If it does brake down my idea of not accepting a "missing" in a Boolean
field is propably right and you could then in

recoding could also be done in epidata:
  if m1ham  = . then 
     m1ham = "N"

and run the recode in tools

Jens Lauritsen
info at epidata.dk

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