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Single or duplicate data elements for mixed period collection?

 

Good morning DHIS2 community,

It's been a while ... changing mail clients meant that forum messages
skipped my in-box ... and what do they say ... 'out of sight - out of mind'.

Anyway, I've rearranged settings and can see the email list is as busy as
ever!

And onto my burning question:

If we have a mix of organisational units (countries in our case, collecting
national data) that:

   - some of which have historical monthly data, and some of which only
   have annual data; and
   - going forward, are transitioning to monthly data (but some will be
   slower and for the next couple of years will only have annual data)

AND we want to bring this into a single DHIS2 instance, then

   1. Is the best approach to create a set of duplicate data elements (in
   different datasets, one set for an annual collection period and one set for
   a monthly collection period)? or
   2. Is it possible to use a single data element in two different datasets
   with different periods set (one monthly and one annual)? ... (I don't see
   how this would work in practice, but maybe I'm just missing something - I
   know it is possible to put a DE in more than one dataset, but mixed
   collection periods for the same data element seems like it will mess up
   reporting and analytics)

Any thoughts or guidance or other options from the group appreciated.

Regards

David Hagan

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