Here is a snippet of the metadata. For age in months we calculate off of BIRTH_DATE which has been shifted +- 30.
C_HLEVEL C_FULLNAME C_NAME C_SYNONYM_CD C_VISUALATTRIBUTES C_BASECODE C_METADATXML C_FACTTABLECOLUMN C_TABLENAME C_COLUMNNAME C_COLUMNDATATYPE C_OPERATOR C_DIMCODE C_TOOLTIP SOURCESYSTEM_CD UPDATE_DATE M_APPLIED_PATH 4 \Demographics\patient_demographics\patient_age\patient_age_00-09\patient_age_00\ Patient Age < 1 Year N FA DEM|AGE:0 CONCEPT_CD CONCEPT_DIMENSION CONCEPT_PATH T LIKE \Demographics\patient_demographics\patient_age\patient_age_00-09\patient_age_00\ Demographics \ patient_demographics \ patient_age \ patient_age_00-09 \ patient_age_00 demographics.owl 2014-03-11 00:00:00 @ 5 \Demographics\patient_demographics\patient_age\patient_age_00-09\patient_age_00\patient_age_month_00\ Patient Age < 1 Month N FA PATIENT_NUM PATIENT_DIMENSION BIRTH_DATE N < GetDate() - (365.25 * 0.085) Demographics \ patient_demographics \ patient_age \ patient_age_00-09 \ patient_age_00 \ patient_age_month_00 demographics.owl 2014-03-11 00:00:00 @ 5 \Demographics\patient_demographics\patient_age\patient_age_00-09\patient_age_00\patient_age_month_01\ Patient Age 01 Month N LA PATIENT_NUM PATIENT_DIMENSION BIRTH_DATE N BETWEEN GetDate() - (365.25 * 0.162) AND GetDate() - (365.25 * 0.085) Demographics \ patient_demographics \ patient_age \ patient_age_00-09 \ patient_age_00 \ patient_age_month_01 demographics.owl 2014-03-11 00:00:00 @ Currently our pediatricians will be happy that they can create finer aggregations. Some have asked for age in days, but our IRB said no to that granular of information in i2b2. Nathan From: [email protected] [mailto:[email protected]] On Behalf Of Justin Dale Sent: Tuesday, March 18, 2014 10:10 AM To: Wilson Nathan Cc: [email protected] Subject: Re: [Gpc-dev] de-identification - patients under 1 year old Thanks for the replies. Nathan - for the patients 36 months or less: do you shift the birthdate +/- 30 days and then provide the user with the shifted birthdate value and/or age concept represented in years/months? Have you found times when even a +/- 30 day shift causes issues with pediatricians (or other users)? We currently use a date shift between -1 and -365 days but I'm thinking that may be too extreme. Regards, Justin Dale Manager - Research Development and Support University of Minnesota Academic Health Center - Office of Information Systems Phone: 612.624.9747 Fax: 612.624.7458 [email protected]<mailto:[email protected]> On Tue, Mar 18, 2014 at 9:34 AM, Wilson Nathan <[email protected]<mailto:[email protected]>> wrote: Here at UW-Madison we currently group all patients whose age is less than 1 years old into a single age category called "0 Years Old". This however did not work well with pediatricians here, so we are in the process of implementing an ontology which will calculate a patients age for patients 36 months or less based the patients shifted birthdate in addition to the traditional concept based age approach. Nathan Wilson From: [email protected]<mailto:[email protected]> [mailto:[email protected]<mailto:[email protected]>] On Behalf Of Justin Dale Sent: Tuesday, March 18, 2014 9:04 AM To: [email protected]<mailto:[email protected]> Subject: [Gpc-dev] de-identification - patients under 1 year old Seeking input on how your site represents a patient's age who is under 1 year old? Do you group them in the 1 year old bucket (similar to 90 and over)? Do you provide fractions of a year or represent months (seems like it goes against the safe harbor rules)? Do you shift the birthdate and just provide that? Thanks. Justin
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