Reference no: EM133101558

Background: A client requests that you build a persistency study to measure the number of patients still in therapy after 12 months from initiation (allowing for no more than 30 days consecutively off therapy.

1. You have access to a pharmacy claims dataset representing commercially insured patients with more than 2 years of history. The dataset does contain enrollment start and stop dates for each patient. Describe the methodology you would use to answer the client's question.

2. You have access to a pharmacy claims dataset representing commercial, Medicare, and Medicaid insured patients with more than 2 years of history. The dataset does not include enrollment dates, rather this dataset is "open" such that pharmacies may leave/enter the dataset at any time. Describe the methodology you would use to answer the client's question.

3. You have access to both datasets described above in #1 and #2. Which dataset would you recommend to the client and why?