Crohn's Disease phenotype algorithm for the DNA DataBank Demonstration Project. Case records are required to have more than 2 occurrences of ICD 9 codes and medications. Control records are required to not have ICD 9 codes or keyword mention of crohn* or Regional enteritis and excludes additional phenotypes as defined by ICD 9 codes and keywords.
Data source summary:
|
|
Diagnostic Codes? |
Text Keywords? |
Narrative Notes to search |
Other rules |
|
Cases |
Yes |
Disease and medication |
H&P, Discharge summary, all notes Pathology reports |
Requires manual curation if dual diagnosis of Crohn’s and UC |
|
Possible/ Probable |
Yes |
Disease only |
H&P, Discharge summary, all notes Pathology reports |
Requires manual curation of all records |
|
Controls |
Yes (Absence of codes) |
Absence of keywords |
All text |
|
|
Excluded from Analysis |
Yes |
Disease only |
All text |
|
