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Interventions to enhance medication adherence.

R B Haynes1, X Yao, A Degani

  • 1McMaster University Medical Centre, Clinical Epidemiology and Biostatistics, HSC Room 2C10b, 1200 Main St. West, Hamilton, Ontario, Canada L8N 3Z5. bhaynes@fhs.csu.mcmaster.ca

The Cochrane Database of Systematic Reviews
|October 20, 2005
PubMed
Summary
This summary is machine-generated.

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Simple interventions effectively improve short-term medication adherence. However, complex strategies are needed for chronic conditions, with limited success in enhancing adherence and treatment outcomes for long-term care.

Area of Science:

  • Health Services Research
  • Clinical Pharmacy
  • Behavioral Medicine

Background:

  • Many patients do not adhere to prescribed medication regimens, taking less than half of prescribed doses.
  • Improving medication adherence can enhance treatment benefits but may also increase adverse effects.

Purpose of the Study:

  • To systematically review randomized controlled trials (RCTs) evaluating interventions aimed at improving patient adherence to prescribed medications for medical conditions.

Main Methods:

  • Comprehensive literature searches were conducted across multiple databases up to September 2004.
  • Studies were included if they reported unconfounded RCTs measuring both adherence and treatment outcomes with adequate follow-up.
  • Data extraction included study design, interventions, adherence rates, and clinical outcomes, with verification by multiple reviewers.

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Main Results:

  • For short-term treatments, some interventions improved both adherence and clinical outcomes, while others improved adherence but not outcomes.
  • For long-term treatments, many interventions improved adherence, but fewer improved clinical outcomes.
  • Effective long-term interventions were often complex, combining multiple strategies; however, even the most effective methods yielded modest improvements.

Conclusions:

  • Simple interventions are effective for improving short-term medication adherence.
  • Current complex interventions for chronic conditions have limited effectiveness in improving adherence and realizing full treatment benefits.
  • Further research is crucial for developing innovative strategies to enhance long-term medication adherence for chronic disorders.