Phenotype: 
Algorithm Type: 
Case, Control
Institution: 
Implementation Details: 

Execute the algorithm where the encounter is defined loosly as two events within one month.  Case 1: 71; Case 2: 4; Case 3: 2431

We used patients who received their primary care at Mayo but with no mention of appendicitis or appendectomy to be the control.

Total Cases: 
2,506
Total Controls: 
2,087