Hi Gerard, On Sat, Jun 23, 2018 at 6:58 PM, GF <[email protected]> wrote:
> When one assumes that the all events are the same kind of events but > occurring at various points in time, > That is what is supported by the openEHR spec, no need to assume. All EVENTs in HISTORY.data are of the same type ~ have the same definition in the archetype. > > Then the period can be expressed as Frequency (n/T) or equally as Period > n/F). > > Where n=number of events and T= total time from begin of the first event > till the last (E.1 - E.n) > Clinical example: > Heart rate = 120 beats per minute. > > Or as Period (T=n/F) expressed as time units that is the time between two > events. > Clinical example: > Period between heart beats = 60/120 = 0,5 seconde. I.E the time between > E(n+1) - E(n) > > In your example > Period = 1 divided by Time (E2.start - Time E1.start), > or, Period = 1 divided by Time(E3.start) - Time(E2.start) > or, Period = 2 divided by Time (E3.start - Time E1.start) > This works with POINT_EVENT, my question is about INTERVAL_EVENT from the openEHR specs, where each event start and end are different. By openEHR, the heart rate EVENT is one single measure of the hear rate, there is no record of individual beats. What would make an INTERVAL_EVENT from heart rate, is to record the average heart rate in an hour. And a periodic list of INTERVAL_EVENTs, would be records of the average of the heart rate that happen periodically. The issue I'm having is the specs don't have a concrete definition of "period" for INTERVAL_EVENT series. > > Where in the OPENEHR specs can I find Frequency? > When we document we talk about numbers but often in qualitative terms? > What is the complete list of terms to describe these things using a > classification? > > Gerard Freriks > +31 620347088 > [email protected] > > Kattensingel 20 > 2801 CA Gouda > the Netherlands > > On 23 Jun 2018, at 21:35, Pablo Pazos <[email protected]> wrote: > > Hi all, > > As usual I'm reading the specs and have a question about periodic interval > events. > > I'm not sure how the period is calculated in a series. Let's say we have > interval events on a time line: > > ---E1.start___________E1.end----------E2.start____E2.end-------... > > Note: interval events can have different durations. > > Is the period calculated from E1.start to E2.start or from E1.end to > E2.start? > > This is of course to know when E3 should start. > > Thanks! > > -- > > > > _______________________________________________ > openEHR-technical mailing list > [email protected] > http://lists.openehr.org/mailman/listinfo/openehr- > technical_lists.openehr.org > > -- *Ing. Pablo Pazos Gutiérrez* [email protected] +598 99 043 145 skype: cabolabs Subscribe to our newsletter <http://eepurl.com/b_w_tj> <https://cabolabs.com/> http://www.cabolabs.com https://cloudehrserver.com
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