Interferon Toxicities in Melanoma Treatment

Inclusion Criteria

• •Patients with a pharmacy claim for IFN between 1/1/2007 and 12/31/2011. The date of the first observed claim will be defined as the index date
• •Patients with a melanoma diagnosis based on two medical claims prior to the index date
• •Patients with a procedure code for melanoma-related lymph node dissection before the index date
• •Patients ≥ 18 years of age on or before the index date
• •Patients with continuous benefit enrollment for at least 180 days before and after the index date