Readme: File for USN Research Data Archive ------------------- GENERAL INFORMATION ------------------- TITLE FOR THE FILE The Questionnaire used in Hagen et al. Prevalence and Possible Factors of Myopia in Norwegian Adolescents. Scientific Reports 2018. CONTACT INFORMATION Professor Rigmor C. Baraas University of South-Eastern Norway Hasbergsvei 36 3616 Kongsberg rigmor.baraas@usn.no DATA COLLECTION 2015-2016 in Southeast Norway LANGUAGE English Norwegian (questionnaire) ---------------- FILE INFORMATION ---------------- Filename: i) Questionnaire.pdf File created 24.02.2020 ----------- METHODOLOGY ----------- A cross-sectional study was performed to examine the prevalence of refractive errors in a representative sample of 16–19 years old Norwegian Caucasians (Hagen et al., 2018). The participants completed an online questionnaire, an adapted version of the one used in the Sydney Myopia study (Ojaimi et al. 2005), to obtain demographic data and to quantify the amount of time spent on various indoor and outdoor activities. The questionnaire was translated into Norwegian. ----------- REFERENCES ----------- Hagen, L. A., Gjelle, J. V. B., Arnegard, S., Pedersen, H. R., Gilson, S. J., & Baraas, R. C. (2018). Prevalence and Possible Factors of Myopia in Norwegian Adolescents. Scientific Reports, 8(1), 13479. doi:10.1038/s41598-018-31790-y Ojaimi, E., Rose, K. A., Smith, W., Morgan, I. G., Martin, F. J., & Mitchell, P. (2005). Methods for a population-based study of myopia and other eye conditions in school children: the Sydney Myopia Study. Ophthalmic Epidemiology, 12(1), 59-69. doi:10.1080/09286580490921296