Appendix Table 1.

Definition of potentially avoidable complications

Among patients with known angina, ≥3 emergency department visits for cardiovascular-related diagnoses in 1 year

Among patients with known cholelithiasis, diagnosis of perforated gallbladder

Among patients with known diabetes, admission for hyperosmolar or ketotic coma

Among patients with known chronic obstructive pulmonary disease, subsequent admission for a respiratory diagnosis

Among patients with known emphysema, subsequent admission for a respiratory diagnosis

Among patients with pneumonia, diagnosis of lung abscess or emphysema

Non-elective admission for congestive heart failure