Marshfield Venous Thromboembolism implementation

Algorithm Type: 
Case, Control
Implementation Details: 

Randomly selected 50 cases and 50 controls for abstraction. One control subsequently became invalid in a later version of the algorithm, so they are excluded from the results below. Marshfield used a modified algorithm comprising of a combination of both diagnoses and NLP which is outlined in the attached document entitled eMERGE II Venous Thromboembolism Phenotype Marshfield.docx (see below).

Cases (50) Actual Class (Expectation)
Predicted Class
(Observation)
True Positive: 
49.00
Correct result
False Positive: 
1.00
Unexpected result
Case Positive Predictive Value:
 98%
Control (49) Actual Class (Expectation)
Predicted Class
(Observation)
True Positive: 
49.00
Correct result
False Positive: 
0.00
Unexpected result
Control Positive Predictive Value:
 100%