Biopsy data and episode table

CDM Builders
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Hello everyone! I’m building a CDM regarding data of patients with prostate cancer. Many of the patients have performed biopsies and I am not sure how to implement this in the episode table.
What episode concept_id shall I use?

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Hello @manoshatzak. By design, a biopsy being performed should be 1st stored in the standard OMOP CDM table - procedure_occurrence (event table). Since a biopsy is a diagnostic procedure, there is usually no need to create or derive a new Episode specifically for it. The only scenario where this could differ (the one I see) is if the biopsy date is used to adjust the start_date of already abstracted episode. In case of prostate cancer most likely - overarching Disease Episode.
Otherwise, you can link the biopsy event to an existing episode (potentially the one preceding the biopsy) using the episode_event table.

BTW, Oncology WG sessions may serve as good place to discuss rules as well. Welcome to join.

Tagging folks who may assist on the topic as well: @Christian_Reich @agolozar @Dymshyts @ElenaTrach @MPhilofsky

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Ok thanks for the reply!!
Generally, I can’t understand fully the concept of the episode table and what counts as an episode. For example, what could be an episode in prostate cancer use case?

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Hi @manoshatzak
This should help:

Please come to the working group, as Vlad suggested.

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