Document Detail

Adherence to 5-alpha reductase inhibitor therapy for benign prostatic hyperplasia: clinical and economic outcomes.
MedLine Citation:
PMID:  23091339     Owner:  NLM     Status:  In-Data-Review    
OBJECTIVE: Our goal was to quantify relationships between adherence to 5-alpha reductase inhibitors (5-ARIs), the risk of acute urinary retention (AUR) and prostate surgery, and medical costs related to patients with benign prostatic hyperplasia (BPH).
METHODS: Claims recorded over a period of 6.5 years in a nationwide managed care database were analyzed. We conducted time-to-event multivariate analysis to evaluate relationships between adherence (medication possession ratio [MPR] thresholds of 70% or higher, 75% or higher, and 80% or higher), persistence (length of therapy), and the risk of AUR and surgery. We compared mean monthly BPH-related medical costs in patients with MPRs at or above thresholds and those with MPRs below thresholds and determined changes in BPH-related costs associated with 30-day increments of therapy.
RESULTS: In AUR analyses (N = 17,293), meeting or exceeding MPR thresholds was associated with a reduced likelihood of AUR for 70% (hazard ratio [HR], 0.380), 75% (HR, 0.613), and 80% (HR, 0.519) (P < 0.05 for all). In prostate surgery analyses (N = 17,739), the likelihood of surgery was reduced with MPR thresholds of 70% or above (HR, 0.294), 75% or above (HR, 0.542), and 80% or above (HR, 0.436) (P < 0.05 for all). A longer duration of therapy was associated with a reduced likelihood of AUR (HR, 0.860) and surgery (HR, 0.884) (P < 0.05 for both). In both populations, adherence and persistence were also associated with significantly decreased BPH-related medical costs.
CONCLUSION: In patients with BPH who received 5-ARI therapy, greater adherence and persistence were associated with significantly reduced risks of AUR and prostate surgery and with significantly lower medical costs. Maximizing adherence may enable patients to realize the potential long-term benefits of 5ARIs.
Stephen Gruschkus; Sara Poston; Michael Eaddy; Sham Chaudhari
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  P & T : a peer-reviewed journal for formulary management     Volume:  37     ISSN:  1052-1372     ISO Abbreviation:  P T     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-10-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9015516     Medline TA:  P T     Country:  United States    
Other Details:
Languages:  eng     Pagination:  464-70     Citation Subset:  -    
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