期刊
THROMBOSIS RESEARCH
卷 133, 期 4, 页码 550-554出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.thromres.2014.01.002
关键词
Anticoagulant; Concerns; Knowledge; Medication adherence; Satisfaction; Warfarin
资金
- National University of Singapore
Introduction: A better understanding of patients' knowledge, satisfaction and concerns can identify deficits and help develop targeted patient education. This study aimed to examine patients' knowledge, satisfaction and concerns regarding warfarin therapy and assess their association with warfarin adherence and international normalized ratio (INR) control. Materials and methods: A cross-sectional survey was conducted in a convenience sample of patients taking warfarin in an anticoagulation clinic. The questionnaire consisted of questions on patients' knowledge, satisfaction and concerns regarding warfarin treatment. Patients' warfarin refill records and time within the therapeutic INR range were retrieved from hospital databases. Results: One hundred and eighty-three patients participated in the survey. Patients had inadequate knowledge of warfarin-diet and warfarin-drug interactions. Over 40% of the respondents were not satisfied with the waiting time to see a pharmacist. The most common concerns of taking warfarin were worries about warfarin-drug interactions (36.1%), forgetting to take warfarin (26.2%) and worries about side effects (25.7%). Higher satisfaction was associated with better knowledge (r = 0.24, p = 0.001) and fewer concerns (r(s) = -0.23, p = 0.002). Better knowledge and higher satisfaction were associated with higher warfarin adherence (r(s) = 0.21 and 0.16; p = 0.01 and 0.046, respectively). Better knowledge, higher satisfaction, fewer concerns, and better warfarin adherence were associated with good INR control (p = 0.003, 0.02, 0.03 and 0.003, respectively). Conclusions: This study highlighted patients' concerns and deficits in knowledge regarding warfarin treatment, and also demonstrated their association with warfarin adherence and INR control. (C) 2014 Elsevier Ltd. All rights reserved.
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