The algorithm uses Structured Query Language to identify AAA cases, controls, and excludes from the Electronic Medical Record. AAA cases were defined as meeting at least one of three criteria: had a AAA repair procedure (Case Type 1), had at least one vascular clinic encounter with a diagnosis of ruptured AAA (Case Type 2), or had at least two vascular clinic encounters with a diagnosis of unruptured AAA (Case Type 3). AAA controls must be neither excludes nor cases, had an encounter within the past 5 years, and never had a diagnosis of ICD9 code 441.3, 441.4, or 441.9 from any department. Patients were excluded if any exclusion diagnosis existed in the medical record, were younger than 40 or older than 89, were neither a Case Type 1 nor Case Type 2 and haven’t had an encounter within the past 5 years, or were not a case and had an ICD9 code diagnosis of 441.* at some point in the medical history.
Abdominal Aortic Aneurysm ( AAA )
Type of Phenotype:
Tuesday, June 5, 2012
Owner Phenotyping Groups:
Kenneth Borthwick. Geisinger. Abdominal Aortic Aneurysm ( AAA ). PheKB; 2012 Available from: https://phekb.org/phenotype/97