Establishing the Benefits of Adherence to Enlarged Prostate Treatment: A Validation Study Linking Adherence to Outcomes Using the Market Scan Database
Establishing the Benefits of Adherence to Enlarged Prostate Treatment: A Validation Study Linking Adherence to Outcomes Using the Market Scan Database
Adherence and length of therapy with 5-alpha reductase inhibitor (5ARI) treatment may be
 associated with improved clinical outcomes of enlarged prostate (EP) as well as lower health
 care costs.

 The objective of this retrospective database analysis is to quantify the relationship between
 adherence and length of therapy with a 5ARI and the likelihood of acute urinary retention
 (AUR) or prostate surgery (emergency and non-emergency) in patients with benign prostatic
 hyperplasia (BPH). The study will also measure the economic impact associated with these
 medical encounters.

 The MarketScan database contains data from people with commercial health insurance and
 Medicare and includes both medical and pharmacy data that are sourced directly from health
 plans and employers. Approximately 18 million covered lives will be utilized for this study
 in the time period from January 1, 2003 to September 30, 2009.

 This study is a retrospective cohort analysis of medical claims data.
Inclusion Criteria:

 -  Male

 -  Aged 50 years or older

 -  A diagnostic claim of benign prostatic hyperplasia (International Classification of
 Diseases, Ninth Revision, Clinical Modification [ICD-9-CM] codes 222.2x or 600.xx)

 -  A prescription claim for a 5-alpha reductase inhibitor (5ARI) for at least 60 days
 during the observation period

 -  Continuous health plan eligibilitiy for 6 months prior to and at least 150 days after
 the initial 5ARI prescription

 Exclusion Criteria:

 -  A diagnosis of prostate cancer (ICD-9-CM codes 185.xx, 198.82, 233.4, 236.5, 239.5,
 V10.46)

 -  A diagnosis of bladder cancer (ICD-9-CM codes 188.xx, 198.1, 223.3, 233.7, 239.4,
 V10.51),

 -  A procedure code for any prostate-related surgery prior to the index date or 150 days
 after the index date

 -  A diagnosis code for acute urinary retention (AUR) prior to the index date or 150 days
 after the index date