Conceptualization, Development and Psychometric Evaluations of a New Medication-Related Health Literacy Instrument: The Chinese Medication Literacy Measurement

Hsiang-Wen Lin, Elizabeth H. Chang, Yu Ko, Chun-Yu Wang, Yu-Shan Wang, Okti Ratna Mafruhah, Shang-Hua Wu, Yu-Chieh Chen and Yen-Ming Huang
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Hsiang-Wen Lin: School of Pharmacy and Graduate Institute, College of Pharmacy, China Medical University, Taichung City 404333, Taiwan
Elizabeth H. Chang: Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City 110301, Taiwan
Yu Ko: Department of Clinical Pharmacy, School of Pharmacy, College of Pharmacy, Taipei Medical University, Taipei City 110301, Taiwan
Chun-Yu Wang: Department of Pharmacy, Shin Kong Wu Ho-Su Memorial Hospital, Taipei City 111045, Taiwan
Yu-Shan Wang: School of Pharmacy and Graduate Institute, College of Pharmacy, China Medical University, Taichung City 404333, Taiwan
Okti Ratna Mafruhah: School of Pharmacy and Graduate Institute, College of Pharmacy, China Medical University, Taichung City 404333, Taiwan
Shang-Hua Wu: Department of Pharmacy, Songde Branch, Taipei City Hospital, Taipei City 110209, Taiwan
Yu-Chieh Chen: School of Pharmacy and Graduate Institute, College of Pharmacy, China Medical University, Taichung City 404333, Taiwan
Yen-Ming Huang: Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei City 100025, Taiwan

IJERPH, 2020, vol. 17, issue 19, 1-17

Abstract: There is a need for valid and reliable instruments to focus on medication aspects of health literacy and help healthcare professionals address patients’ barriers to medication use. This cross-sectional study describes the conceptualization, development, and psychometric properties of the first Chinese Medication Literacy Measurement (ChMLM) to assess the level of health literacy on medication use. The 17-item ChMLM (ChMLM-17) and its short form, 13-item ChMLM (ChMLM-13), consist of four sections (vocabulary, over-the-counter labels, prescription labels, and advertisements) to cover six domains of medication-related health literacy. Multistage stratified quota sampling was attempted to recruit a representative sample in Taiwan. Receiver operating characteristic curves were used to identify the cut-off point for differentiating high and low medication literacy. Psychometric analyses were performed ( n = 1410) to assess the reliability and validity separately on all samples and sociodemographic subgroups. The 17- and 13-item versions both had high construct validity among all patients and patients with low medication literacy. The developed ChMLM-17 and ChMLM-13 is expected to help healthcare providers and researchers to accurately measure medication-related health literacy and improve medication use in the real-world practice.

Keywords: health literacy; health professionals; medication literacy; psychometric properties (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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