Patients’ Warfarin Knowledge, Medication Adherence and Anticoagulation Control at Warfarin Clinic, Phatthalung Hospital
Keywords:Warfarin knowledge, Medication adherence, Anticoagulation control, Warfarin
This cross-sectional study aimed to (i) assess warfarin knowledge and medication adherence (ii) investigate the factors affected on warfarin knowledge, medication adherence and anticoagulation control and (iii) investigate the association between warfarin knowledge, medication adherence and anticoagulation control. The 159 patients who visited warfarin clinic and take warfarin were recruited into the study through simple random sampling. The 3 research instruments comprised of the questionnaire modified from oral anticoagulation knowledge test (OAK), medication adherence scale in Thais (MAST) and measurement of INR presented as the percent time in therapeutic range (%TTR). Result: of 159 patients interviewed, patients with the “passing” knowledge score were 34.59%, the medication adherence was rated at good level at 93.71% and good INR control at 59.75%. Patient’s age, education and duration of warfarin used were statistically associated with warfarin knowledge (p<0.05). The total polypharmacy was statistically associated with anticoagulation control (p<0.05).
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