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).

True Positive: 
49.00
False Positive: 
1.00
True Positive: 
49.00
False Positive: 
0.00
Case Positive Predictive Value: 
0.98
Control Positive Predictive Value: 
1.00
Total Cases: 
50
Total Controls: 
49