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High Medication Non-Adherence Rates and its Drivers in the General Population: A Cross-sectional Study Using the
Rønnaug Eline Larsen1, Ala Karimi1, Tonje Krogstad1
1Deparment of Pharmacy, Faculty of Health Sciences, Oslo Metropolitan University, Oslo, Norway.
Many patients struggle with medication adherence due to forgetfulness or perceived health improvements. This study highlights the need for personalized interventions to improve medication outcomes.
Area of Science:
- Health Sciences
- Pharmacy Practice
- Behavioral Medicine
Background:
- Medication adherence is crucial for optimal health outcomes, yet significant variability exists among patients.
- Understanding medication-taking behaviors, barriers, and beliefs is essential for developing effective adherence interventions.
Purpose of the Study:
- To assess medication non-adherence and its causes in the general population using the OsloMet Adherence-to-medication Survey tool (OMAS-37).
- To compare adherence levels and non-adherence causes across different patient subgroups (cardiovascular, pain, mental health).
Main Methods:
- A cross-sectional study involving 812 medication users in Norway.
- Utilized the OMAS-37 tool to quantify adherence and identify 37 unique causes of non-adherence.
- Kruskal-Wallis tests were used for statistical comparisons between general population and patient subgroups.
Main Results:
- 64% of participants exhibited high non-adherence scores.
- Top reasons for non-adherence included forgetfulness (42%), perceived health improvement (40%), and fear of adverse drug reactions (39%).
- Positive adherence factors included older age, higher education, shared decision-making, and pill organizer use. Cardiovascular patients showed better adherence than pain and mental health subgroups.
Conclusions:
- The OMAS-37 tool revealed high rates of medication non-adherence and diverse causes across patient groups.
- Findings underscore the necessity for targeted, individualized adherence interventions to improve medication outcomes.
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