# Representation of variation in pregnancy

**URL:** https://discourse.openehr.org/t/representation-of-variation-in-pregnancy/442
**Category:** Clinical
**Tags:** archetype, obstetrics
**Created:** [5 March 2020 08:01 UTC](https://discourse.openehr.org/t/representation-of-variation-in-pregnancy/442 "2020-03-05T08:01:36Z")
**Posts on this page:** 1
**Showing post:** 8

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### Author: ![ian.mcnicoll](https://discourse.openehr.org/user_avatar/discourse.openehr.org/ian.mcnicoll/32/4430_2.png) [@ian.mcnicoll](https://discourse.openehr.org/u/ian.mcnicoll)
#### Post date: [10 March 2020 10:00 UTC](https://discourse.openehr.org/t/representation-of-variation-in-pregnancy/442/8 "2020-03-10T10:00:13Z")

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[_moved from [https://discourse.openehr.org/t/representation-of-genetic-positions](https://discourse.openehr.org/t/representation-of-genetic-positions), originally the first response to this subtopic_]

Pregnancy is different [[_from the example of genetic positions_]](https://discourse.openehr.org/t/representation-of-genetic-positions/407/4) since this is actually about imprecision. The accuracy support in quantity might (should) work for that - see [https://specifications.openehr.org/releases/UML/latest/#Architecture\_\_\_18\_1\_83e026d\_1433773264460\_352968\_7042](https://specifications.openehr.org/releases/UML/latest/#Architecture___18_1_83e026d_1433773264460_352968_7042)

It is certainly what it is/was intended for a

You could have  
magnitude = “PW34”  
accuracy = “+ - 7 days”

or theoretically have an Interval of Duration “-P7D… +P7D” - I think!!? But 'm not sure that is going to be helpful for safe.

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