Vanderbilt evaluation for Diverticulosis

Algorithm Type: 
Case Only
Institution: 
Implementation Details: 

This is only for Diverticulosis currently.  The false positives were mostly for failure to recognize negation signals.  There was one Meckels diverticulum which was not excluded in the initial run.

Our algorithm was slightly modified: we found non-negated UMLS CUIs from abd/pelvic CT scans and colonoscopy reports.  The NLP system used was KnowledgeMap + SecTag. 

Diverticulosis concepts

CUI             CUI-Preferred Name
------------------------------
1395668     abscess; diverticular disease
581360     Bleeding diverticulosis
1516321     Cecal Diverticulum
1391744     cecum; diverticulum
742593     COLON  DIVERTICULOSIS DIFFUSE
12811      Colon diverticulum anatomic structure
742577     COLON LEFT DIVERTICULOSIS
341356     Complicated diverticular disease
12819      Diverticular disease of colon
1510475     Diverticulosis
149653     Diverticulosis of colon without diverticulitis
12818      Diverticulosis of sigmoid colon
12817      diverticulum
1395692     diverticulum; abscess
940686     Few colonic diverticula
940687     Multiple colonic diverticula
1265782     Multiple diverticula
341257     Perforated diverticulum unspecified
854524     Peridiverticular abscess
1395716     rectosigmoid; diverticulum
521211     Resection of diverticulum
1395719     sigmoid; diverticulum
400837     Simple diverticular disease
1265781     Single diverticulum

 

Diverticulitis concepts (which also indicated presence of diverticulosis):
518989     Acute diverticulitis
859969     Chronic diverticulitis
742576     COLON LEFT DIVERTICULITIS
581275     Colonic diverticular abscess
12813      Diverticulitis
12814      Diverticulitis of colon
679411     diverticulitis or diverticulosis
1395644     diverticulitis with abscess
947869     Diverticulum inflammations
544794     Perforated diverticulitis
 

Cases (0) Actual Class (Expectation)
Predicted Class
(Observation)
True Positive: 
44.00
Correct result
False Positive: 
6.00
Unexpected result
Case Positive Predictive Value:
 88%