Stream: questionnaire
Topic: Score sum example?
Paul Lynch (May 21 2019 at 22:20):
Does anyone have an example of using FHIRPath to sum the scores (ordinalValue) for the answers of a QuestionnaireResponse? I can write FHIRPath that finds individual scores and explicitly add each one, but I am having trouble coming up with an expression that would work with FHIRPath's aggregate function without making simplifying assumptions.
Paul Lynch (May 22 2019 at 22:11):
Here is the FHIRPath I wrote to retrieve the score associated with just one of answers in a PHQ-9 form:
%questionnaire.item.where(linkId = '/44260-8').answerOption.where(valueCoding.code=%resource.item.where(linkId = '/44260-8').answer.valueCoding.code).extension.where(url=%scoreExt).valueDecimal
I had to write nine of those, and ended up putting them in variables, because sometimes the value was empty, and so I needed to wrap each value inside "iif" before adding them together.
Is there a simpler approach?
Lloyd McKenzie (May 22 2019 at 23:31):
@Bryn Rhodes @Grahame Grieve ?
Brian Postlethwaite (May 23 2019 at 23:44):
Got a reference to that whole form @Paul Lynch?
Paul Lynch (May 24 2019 at 02:37):
Last updated: Apr 12 2022 at 19:14 UTC
