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Introduction To measure Health literacy (HL) as proposed in the context of the European Health Literacy Survey/questionnaire (HLS-EU-Q), the Health Literacy for Children and Adolescents (HLCA) Consortium (GE) adapted it for children. A trans-cultural adaptation and validation to Portuguese (HLS-EU-PTc), will supply policy makers, experts and health professionals with information that can promote healthier communities while fighting health disparities. Methods After permission was granted from the HLCA Consortium the TRAPD model was used (eg parallel translation, focus groups, two back translations). An assessment and pretesting of HLS-EU-PTc was done with 16 children for cognitive testing. A qualitative explanatory (n = 16) and quantitative, cross-sectional study (n = 82), age mean 13, SD 0.96, from Portugal (mainland) was implemented for proceed with the validation process. A variety of measures were obtained like internal consistency and mean scores. Results Preliminary results for evaluation of the psychometric properties of the HLS-EU-PTc show satisfactory internal consistency (Cronbach’s alpha coefficient 0.87). In a scale from 1 (very difficult) to 4 (very easy) for indicators of the HLS-EU-PTc, we have a mean of 3.25 and a SD of .478. Conclusions This is the first study to examine the feasibility of a Portuguese version (HLS-EU-PTc) of the HLS-EU-Q adapted for children and it indicates high internal consistency and level of self-reported HL. The usefulness of the HLS-EU-PTc instrument can be further discussed while planning public health policy strategies from the HL standpoint. The validated HLS-EU-PTc version of the HLS-EU-Qc survey, with the user’s manual can be accessed at www.literacia-saude.info.

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Policy Press works to counter discrimination on grounds of gender, race, disability, age and sexuality. Cover design by Hayes Design Front cover image: istock Printed and bound in Great Britain by CPI Group (UK) Ltd, Croydon, CR0 4YY Policy Press uses environmentally responsible print partners iii Contents List of figures, tables and boxes ix Notes on contributors xiii 1 Defining health literacy: Exploring differences and commonalities 5 Kristine Sørensen 2 From Saranac Lake to Shanghai: A brief history of health literacy 21 Orkan Okan

Background Health-promoting actions might benefit from adolescent health literacy (AHL), however, there is scant research on it in Nepal. This study identifies adolescent students’ health literacy (HL) needs and trials an intervention to improve their HL and intention to take health-promoting actions. Methods This study employs a pre-and post-test mixed-method intervention involving three phases. First, we will conduct a formative and summative evaluation to identify participants’ HL needs and design an intervention using quantitative and qualitative methods. Second, the intervention will be administered to the intervention group. Finally, formative and summative post-tests will be conducted to assess the effectiveness of the intervention. We will select four community schools from Birendranagar municipality based on random sampling. In quantitative research, data will be collected from adolescents selected through a census with standardized scales such as the HLS-Child-Q15, self-efficacy, social support, and health-promoting actions. A framework analysis was conducted to analyze qualitative data collected from focus group discussions with purposively chosen adolescents and key informant interviews with Health and Physical Education teachers and school nurses. The difference in difference approach will be used to analyze the intervention’s outcome, i.e., the participants’ improved HL, and health-promoting actions. Discussion This is one of the first studies to explore HL in this group in Nepal. This study will provide the first insights into the overall level of AHL, potential AHL determinants, and the relationship between AHL and the intention to participate in health-promoting activities. The data can then be used to inform health promotion and health literacy initiatives.