Mirjam P Fransen1, Karlijn E F Leenaars2, Gillian Rowlands3, Barry D Weiss4, Henk Pander Maat5, Marie-Louise Essink-Bot2. 1. Department of Public Health, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands. Electronic address: m.p.fransen@amc.uva.nl. 2. Department of Public Health, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands. 3. Department of Primary Care and Public Health Sciences, King's College London, London, UK; Institut for Folkesundhed, Aarhus Universitet, Aarhus, Denmark. 4. Department of Family and Community Medicine, University of Arizona College of Medicine, Arizona, USA. 5. Department of Languages, Literature and Communication, Utrecht Institute of Linguistics OTS, Utrecht, The Netherlands.
Abstract
OBJECTIVE: The newest vital sign assesses individual reading and numeracy skills. The aim of this study was to create a Dutch version (NVS-D) and to assess its feasibility, reliability, and validity in The Netherlands. METHODS: We performed a qualitative study among experts (n=27) and patients (n=30) to develop the NVS-D and to assess its feasibility. For validation, we conducted a quantitative survey (n=329). Reliability was assessed by Cronbach's alpha. Construct validity was examined by analyzing association patterns. Receiver operating characteristic (ROC) curves determined optimal cut-off scores. RESULTS: Cronbach's alpha was 0.76. In accordance with a priori hypotheses we found strong associations between NVS-D, general vocabulary, prose literacy and objective health literacy, and weaker associations between NVS-D and subjective health literacy. A score of ≥4 out of 6 best distinguished individuals with adequate versus inadequate health literacy. CONCLUSION: The results suggest that the NVS-D is a reliable and valid tool that allows international comparable health literacy research in The Netherlands. PRACTICE IMPLICATIONS: The NVS-D can be applied in research on the role of health literacy in health and health care, and the development of interventions. The methods can be applied in cross-cultural adaptation of health literacy measures in other countries.
OBJECTIVE: The newest vital sign assesses individual reading and numeracy skills. The aim of this study was to create a Dutch version (NVS-D) and to assess its feasibility, reliability, and validity in The Netherlands. METHODS: We performed a qualitative study among experts (n=27) and patients (n=30) to develop the NVS-D and to assess its feasibility. For validation, we conducted a quantitative survey (n=329). Reliability was assessed by Cronbach's alpha. Construct validity was examined by analyzing association patterns. Receiver operating characteristic (ROC) curves determined optimal cut-off scores. RESULTS: Cronbach's alpha was 0.76. In accordance with a priori hypotheses we found strong associations between NVS-D, general vocabulary, prose literacy and objective health literacy, and weaker associations between NVS-D and subjective health literacy. A score of ≥4 out of 6 best distinguished individuals with adequate versus inadequate health literacy. CONCLUSION: The results suggest that the NVS-D is a reliable and valid tool that allows international comparable health literacy research in The Netherlands. PRACTICE IMPLICATIONS: The NVS-D can be applied in research on the role of health literacy in health and health care, and the development of interventions. The methods can be applied in cross-cultural adaptation of health literacy measures in other countries.
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