dhis2-devs team mailing list archive

[Calle Hedberg <calle.hedberg@xxxxxxxxx>]

Hi

Just to follow up on Jason's info here (and to answer Knut): the background
as to why WHO's "epidemiological week" starts from a Sunday whereas ISO
weeks starts on Monday is not easy to find, but I strongly suspect it was
in practice adopted from or imposed by the US some 60-80 years ago. A lot
of other standards of US origin, like the global use of UTM for mapping,
were adopted in the first decades after WW2 when the US has
scientific/economic dominance.

If you look at the attached document, you will see that with the exception
of the start on Sunday versus Monday, the rest of the week definition is
very similar to the ISO one. AND STATES (THIS CASE US) DO HAVE SOME LEEWAY
WHEN CHOOSING EPI WEEKS.

In my opinion, other countries should just decide to utilise ISO weeks for
disease surveillance, especially since most of them will have adopted ISO
standards in all other sectors - all desktop calenders, personal diaries
etc in most countries show weeks starting on Monday (and with software
diaries you can change it under settings).

As long as it is a standard for that country, I cannot see that such a
single-day shift will have any practical consequences...  The US won't, of
course, but then Americans in general refuse to learn how to count to ten
(still using inches, feet, yards, pounds, bushels and other non-metric
standards) ;-)

Best regards
Calle

On 10 April 2016 at 13:23, Jason Pickering <jason.p.pickering@xxxxxxxxx>
wrote:

> Hi Padam,
>
> This question has come up a few times before. Basically, the issue is that
> other types of weekly schemes are not deterministic (much like the Nepali
> calendar).  ISO weeks can be generated from an algorithm and are standard,
> but other week schemes may not be this deterministic.  There are various
> other period generators as well for the client side apps which would also
> need to be taken into account.
>
> Please have a look in dhis-2/dhis-api/src/main/java/org/hisp/dhis/period
> and you can see how the various period types are implemented. If you can
> submit a patch with the feature, I think this would be a good way to get
> this in, as it has been asked for several times.
>
> Regards,
> Jason
>
>
> On Sun, Apr 10, 2016 at 7:50 PM, Knut Staring <knutst@xxxxxxxxx> wrote:
>
>> Hi Padam,
>>
>> This is not actually a bug, but a feature request (blueprint).
>>
>> Can you provide some more info about these weekly periods - how do they
>> differ from ISO weeks, and why?
>>
>> Regards,
>> Knut
>>
>> On Sun, Apr 10, 2016 at 11:22 AM, Padam Dahal <dahal0514@xxxxxxxxx>
>> wrote:
>>
>>> Public bug reported:
>>>
>>> Customizing DHIS for Early Warning and Reporting System for Nepal. We
>>> are using automatic aggregation to weekly dataset from event data items.
>>> For the dataset, we need to use epidemiological weeks, which differs
>>> from ISO weeks. So I am looking for some ways to fix the issue with the
>>> week system.
>>>
>>> Padam
>>>
>>> ** Affects: dhis2
>>>      Importance: Undecided
>>>          Status: New
>>>
>>> --
>>> You received this bug notification because you are a member of DHIS 2
>>> developers, which is subscribed to DHIS.
>>> https://bugs.launchpad.net/bugs/1568472
>>>
>>> Title:
>>>   Epidemiological weekly periods [other than ISO weeks]
>>>
>>> Status in DHIS:
>>>   New
>>>
>>> Bug description:
>>>   Customizing DHIS for Early Warning and Reporting System for Nepal. We
>>>   are using automatic aggregation to weekly dataset from event data
>>>   items. For the dataset, we need to use epidemiological weeks, which
>>>   differs from ISO weeks. So I am looking for some ways to fix the issue
>>>   with the week system.
>>>
>>>   Padam
>>>
>>> To manage notifications about this bug go to:
>>> https://bugs.launchpad.net/dhis2/+bug/1568472/+subscriptions
>>>
>>> _______________________________________________
>>> Mailing list: https://launchpad.net/~dhis2-devs
>>> Post to     : dhis2-devs@xxxxxxxxxxxxxxxxxxx
>>> Unsubscribe : https://launchpad.net/~dhis2-devs
>>> More help   : https://help.launchpad.net/ListHelp
>>>
>>
>>
>>
>> --
>> Knut Staring
>> Dept. of Informatics, University of Oslo
>> Norway: +4791880522
>> Skype: knutstar
>> http://dhis2.org
>>
>> _______________________________________________
>> Mailing list: https://launchpad.net/~dhis2-devs
>> Post to     : dhis2-devs@xxxxxxxxxxxxxxxxxxx
>> Unsubscribe : https://launchpad.net/~dhis2-devs
>> More help   : https://help.launchpad.net/ListHelp
>>
>>
>
>
> --
> Jason P. Pickering
> email: jason.p.pickering@xxxxxxxxx
> tel:+46764147049
>
> _______________________________________________
> Mailing list: https://launchpad.net/~dhis2-devs
> Post to     : dhis2-devs@xxxxxxxxxxxxxxxxxxx
> Unsubscribe : https://launchpad.net/~dhis2-devs
> More help   : https://help.launchpad.net/ListHelp
>
>


-- 

*******************************************

Calle Hedberg

46D Alma Road, 7700 Rosebank, SOUTH AFRICA

Tel/fax (home): +27-21-685-6472

Cell: +27-82-853-5352

Iridium SatPhone: +8816-315-19119

Email: calle.hedberg@xxxxxxxxx

Skype: calle_hedberg

*******************************************

Attachment: MMWR_week_overview.pdf
Description: Adobe PDF document