Observational Health Data Sciences and Informatics

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Group Leader: Mui van Zandt

**Members:** The sub-group meets every other XXX starting on January X at XXX EST. Here is the link to the skype meeting.

Issue	Options
DEVICE
Default quantity	1 and recommend not nullable to WG
Duplicates for same day	Dedup and use quantity
Drug delivery devices and Drugs	Create convention
PROCEDURE
Duplicates in same day	Dedup and use quantity
Default quantity	1 and recommend not nullable to WG
Multiple qualifiers/modifiers	Create convention depending on Concept
MEASUREMENT
Measurement Type: ordered, collected, measured, checked	Clean up Type Concepts and develop guideline
Invalid values	Develop guideline
When value_as_concept and value_as_number	Start with top 100 convention list
Standardization of measurements	Start with top 100 convention list
Standardization of units	Start with top 100 convention list
OBSERVATION
Family history of - what family member	FACT_RELATIONSHIP/CDM WG
Multiple qualifiers/modifiers	Create convention depending on Concept/new table for CDM WG
Tobacco - when, how much, what, how to connect records	Develop guideline and Concept list
Doing drugs, drinking	Develop guidelines
Type Concepts	Clean up
HCPCS domain assignment	Clean up in vocab group
When value_as_concept, as_number or as_string	Develop guideline
Where does quantity go for CPT/HCPCS-derived Observations
SPECIMEN
Date meaning: Prescription, collection, results, registration of results	Develop guideline