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Cohort Characterization - denominators for subgroups

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(Ajit Londhe) #1

Posting a Git issue here for visibility: https://github.com/OHDSI/Atlas/issues/2420

When using cohort event date ranges as subgroups (Jan-Apr, May-July, etc), the percents are using the total cohort as the denominator rather than the subgroup patients.

I would think that subgroup percent rather than percent of total would be most useful in this view. Where in the code base are these percents calculated?

Tagging @Chris_Knoll


(Chris Knoll) #2

Ok, we’ll take a look. I assume you mean that if you have a sub group that is 50% of the overall cohort, and then there’s a feature that is in 100% of the subgroup, the subgroup’s statistic shows ‘50%’ because those 100% only constitute 50% of the overall cohort?


(Ajit Londhe) #3

Right – I would want to see the 100% listed since 100% of the subgroup has the feature.


(Chris Knoll) #4

For reference, I found this on the demo site that can be used to start a mockup of the changes:
http://atlas-demo.ohdsi.org/#/cc/characterizations/304/results/32877


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