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[One year persistence of free and fixed dose combinations of perindopril/amlodipine]
Gábor Simonyi1, Tamás Ferenci2, Mihály Medvegy3
1Anyagcsere Központ, Szent Imre Egyetemi Oktatókórház Budapest, Tétényi út 12-16., 1115.
Insights
Fixed-dose combination perindopril/amlodipine significantly improved medication adherence in hypertension patients compared to free combinations. This suggests fixed-dose combinations are more effective for long-term hypertension management and cardiovascular risk reduction.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Background:
- Patient adherence is crucial for effective hypertension management and cardiovascular risk reduction.
- Prolonged and effective pharmacotherapy is essential for controlling hypertension.
Purpose of the Study:
- To compare the one-year treatment persistence of free and fixed-dose combinations of perindopril/amlodipine in hypertension patients.
- To evaluate the impact of combination formulation on adherence to antihypertensive therapy.
Main Methods:
- Analysis of Hungarian National Health Insurance prescription data (Oct 2012 - Sep 2013).
- Inclusion of newly diagnosed hypertension patients initiating perindopril/amlodipine therapy.
- Application of discrete time survival analysis to determine medication discontinuation times.
Main Results:
- A total of 109,248 patients were analyzed.
- One-year persistence rates were 27.15% for free combinations and 46.89% for fixed-dose combinations.
- The fixed-dose combination showed a significantly lower discontinuation rate (HR=1.94) and longer persistence (245.7 days vs. 177.6 days).
Conclusions:
- Fixed-dose combination perindopril/amlodipine demonstrates superior one-year treatment persistence compared to free combinations in hypertension management.
- Improved adherence with fixed-dose combinations can lead to more effective and sustained pharmacotherapy for cardiovascular risk reduction.
Introduction:
In management of hypertension patient adherence is one of the most important factors. In hypertension the cardiovascular risk reduction can be reached only by prolonged and effective pharmacotherapy.
Aim:
To evaluate the persistence of one-year treatment of free and fixed-dose combination of perindopril/amlodipine in hypertension.
Method:
Information from the National Health Insurance of Hungary prescriptions database on pharmacy claims between October 1, 2012 and September 30, 2013 was analysed. Authors identified patients who filled prescriptions for free and fixed-dose combination of perindopril/amlodipine, prescribed for the first time for hypertension. Patients have not received antihypertensive therapy with similar active substances during the one year before. Apparatus of survival analysis was used, where "survival" was the time to abandon the medication. As it was available to month precision, discrete time survival analysis was applied.
Results:
109,248 patients met the inclusion criteria. Combination antihypertensive therapy with perindopril/amlodipine was started with a free or a fixed-dose combination of these agents in 19,365 and 89,883 patients, respectively. One year persistence rate in patients taking perindopril/amlodipine as a free combination was 27.15%, whereas it was 46.89% in those on the fixed-dose combination. Mean duration of persistence was 177.6 days in patients on the perindopril/amlodipine free, whereas 245.7 days on fixed-dose combination. Actual rate of discontinuation was approximately twice higher with the treatment of free, compared with the use of the fixed-dose combination (hazard ratio =1.94 [95% CI: 1.91-1.98], p<0.001). Orv Hetil. 2017; 158(36): 1421-1425.
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