Hello every body, Sorry for my intrusion. I?m working with demographic models, so this discussion about the concept "age" is interesting for me.
I think that the only demographic valid concept of "age" is the difference between the actual date and the birth date. We can include a very close concept "aproximate age", when the birth date is not very clear, as Dr USM Bish comment in his mail. All this can be reduced to include the birth date in the model, with an additional field "confidence". This new field is between 0 and 1. And only have value 1 when the birth date is sure. You don?t have to include the "age" concept if you have "birth date" concept... of course is better use birth date because this parameter doesn?t change but age change every second Unfortunately! All the other concepts are not demographic but clinical and must be registered (I think) in international codes and included as this in our archetypes. Sorry again if this is a nonsense. Isabel Rom?n ----- Original Message ----- From: "Philippe AMELINE" <[email protected]> To: "Gerard Freriks" <gfrer at luna.nl> Cc: "OpenEHR Technical" <openehr-technical at openehr.org> Sent: Friday, January 28, 2005 12:37 AM Subject: Re: Age > Hi Gerard, > > We have found that we could represent anything cyclic with two concepts > : regular cycle and unregular cycle > > For regular cycle, you have just to specify the cycle length (say P) and > the event duration (say D) ; time between events is P-D. > Natural langage expression is of the kind "ten minutes every two hours" > > For unregular cycle, you need to specify a third parameter : the number > of events inside a cycle (say N). > Natural langage expression could be : "one hour three times a day" > > That way, you just need 5 semantic concepts to express any cyclic > pattern of an event : > regular cycle > unregular cycle > cycle length > event duration > number of events inside a cycle > > Of course, you can add some concepts such as starting time, ending time > and overall duration. > > Well, it seems very simple ; however, we started a project with a lot of > pre-elaborated sentences samples provided by MDs, and we discovered that > natural langage is very un-accurate because the same sentence can be > understood very differently if you think of it as a regular cycle or an > unregular one. > So we fumbled nearly one month before I was able to discover that the > underlying model was so simple. > > Cheers, > > Philippe > > Gerard Freriks wrote: > > > Dear Philippe, > > > > Thank you for your reaction. > > > > I'm interested in your model for cyclic events. > > > > Gerard > > > > > > -- <private> -- > > Gerard Freriks, arts > > Huigsloterdijk 378 > > 2158 LR Buitenkaag > > The Netherlands > > > > +31 252 544896 > > +31 654 792800 > > On 27 Jan 2005, at 20:15, Philippe AMELINE wrote: > > > >> Hi, > >> > >> In Odyssee, we have made the choice of : > >> > >> 1) defining the concept "Age" as an ellapsed time value > >> 2) defining age related concepts (like "child", "old person"...) as > >> fuzzy sets > >> > >> I think that it is the only way you can manage this kind of thinks. > >> > >> We also have a (quite) good model for cyclic events ; I can describe it > >> further if you want. > >> > >> Cheers, > > > > - > If you have any questions about using this list, > please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
