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About Mission and Outline Background Activities For Community Message from Executive Director Toward the Development of Personalized Healthcare through the Promotion of Industry-Academia Collaboration Organization and Members Department of Community Medical Supports Department of Preventive Medicine and Epidemiology Department of Biobank Department of Integrative Genomics Department of Health Record Informatics Department of Education and Training Department of Public Relations and Planning General Affairs and Planning Sector Cohort Studies Sector Integrated Biobank Sector Integrated Omics Sector Group of Planning Group of Public Relations Group of Education and Training Group of Return of Genomic Results Center for Promotion of Cohort Studies Center for Health Survey Promotion Group of Brain Imaging and Research Group of Biobank Center for Biobank Utilization and Academia-Industry Partnership Group of Integrated Database Systems Group of Information Management for Genome-Cohort Study Group of Privacy Controls Group of Sequencing Group of Microarray-based Genotyping Group of Metabolomics Group of Metagenomics and Microbiome Group of Omics Data Analysis Center for Genome-Wide Association Study Office of Nihonbashi Branch Operation Center for Genome Platform Projects Policy Site Policy Social Media Policy Research Cohort Study and Biobank Community-Based Cohort Study (TMM CommCohort Study) Birth and Three-Generation Cohort Study (TMM BirThree Cohort Study) Integrative Genomics Publications Facilities and Equipment Researchers Specimen and Data Collection Ethical Issues ToMMo's Library News Timeline sitemap links access & contact JAPANESE Large Small A A Top ResearchLengthy Screen Time Associated with Childhood Development Delays [Press Release] News Timeline all News Events Research Monthly archives 2024, April 2024, February 2024, January 2023, November 2023, October 2023, September 2023, August 2023, July 2023, June 2023, May 2023, April 2023, March 2023, January 2022, December 2022, November 2022, October 2022, September 2022, July 2022, May 2022, April 2022, January 2021, December 2021, November 2021, September 2021, August 2021, July 2021, June 2021, March 2021, January 2020, November 2020, October 2020, September 2020, August 2020, July 2020, June 2020, April 2020, March 2020, February 2020, January 2019, December 2019, November 2019, September 2019, August 2019, July 2019, May 2019, April 2019, March 2019, February 2019, January 2018, December 2018, November 2018, October 2018, September 2018, August 2018, July 2018, June 2018, May 2018, March 2018, February 2018, January 2017, December 2017, November 2017, October 2017, September 2017, August 2017, July 2017, June 2017, May 2017, March 2017, February 2017, January 2016, December 2016, November 2016, October 2016, September 2016, August 2016, July 2016, June 2016, May 2016, April 2016, March 2016, February 2016, January 2015, December 2015, November 2015, October 2015, September 2015, August 2015, July 2015, June 2015, May 2015, April 2015, March 2015, February 2015, January 2014, November 2014, October 2014, August 2014, July 2014, April 2014, March 2014, February 2014, January 2013, November 2013, August 2013, July 2013, June 2013, May 2013, April 2013, February 2013, January 2012, December 2012, November 2012, October 2012, September 2012, April 2012, March 2012, February Lengthy Screen Time Associated with Childhood Development Delays [Press Release] Research: 2023/08/30 A Japanese study found delays in a variety of key skills in children’s early years is associated with screen time exposure at age one. The amount of screen time spent by one-year-olds is associated with developmental delays. This finding, by researchers at Tohoku University in Japan, with collaborators at Hamamatsu University School of Medicine, was published in the journal JAMA Pediatrics. The research examined 7,097 mother–child pairs participating in the Tohoku Medical Megabank Project Birth and Three-Generation Cohort Study. Each child’s screen time exposure was assessed using parental questionnaires, covering viewing of televisions, video game displays, tablets, mobile phones and other electronic devices with visual displays. The children in the study were almost evenly split between boys (51.8%) and girls (48.2%). Their screen time exposure was assigned to the categories of less than one hour (48.5% of subjects), from one to less than two hours (29.5%), from two to less than four hours (17.9%), and four or more hours (4.1%). The children’s development was assessed at two and four years of age in the five domains of communication, gross motor, fine motor, problem solving, and personal and social skills. Previous studies in the field have generally not broken development down into different domains, therefore offering a less refined view. The association between screen time at age one and later developmental delay was assessed using an established statistical technique, revealing a dose-response association; meaning that the level of developmental delay (the response) was correlated to the amount (dose) of screen time. For the children aged two, increased screen time when aged one was associated with developmental delays in all domains apart from gross motor skills. By the age of four however, increased screen time was associated with developmental delays in only the communication and problem-solving domains. “The differing levels of developmental delays in the domains, and the absence of any detected delay in some of them at each stage of life examined, suggests that the domains should be considered separately in future discussions of the association between screen time and child development,” says Tohoku University epidemiologist Taku Obara, corresponding author of the research article. One reason for undertaking this study was recent evidence published by the World Health Organization and the American Academy of Pediatrics suggesting that only a minority of children are meeting guidelines for limiting screen time exposure. The guidelines were designed to ensure that children engage in sufficient physical activity and social interaction. “The rapid proliferation of digital devices, alongside the impact of the COVID pandemic, has markedly increased screen time for children and adolescents, but this study does not simply suggest a recommendation for restricting screen time. This study suggests an association, not causation between screen time and developmental delay” says Obara. “We use the term 'delay' in accordance with previous research, but it is debatable whether this difference in development is really a 'delay' or not. We would like to gain deeper insight in future studies by examining the effects of different types of screen exposure.” Figure: Association of screen time at 1 year of age with communication and problem-solving developmental delay Publication Details Title: Screen Time at Age 1 Year and Communication and Problem-Solving Developmental Delay at 2 and 4 years Authors: Ippei Takahashi, Taku Obara, Mami Ishikuro, Keiko Murakami, Fumihiko Ueno, Aoi Noda, Tomomi Onuma, Genki Shinoda, Tomoko Nishimura, Kenji J. Tsuchiya, Shinichi Kuriyama Journal: JAMA Pediatrics Published date: August 21, 2023 DOI: 10.1001/jamapediatrics.2023.3057   Related Link Birth and Three-Generation Cohort Study (TMM BirThree Cohort Study) News Timeline Tweet About Mission and Outline Background Activities For Community Message from Executive Director Organization and Members Policy Research Cohort Study and Biobank Integrative Genomics Publications Facilities and Equipment Researchers Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links JAPANESE Large Small A A Copyright(C) Tohoku University Tohoku Medical Megabank Organization All Rights Reserved. sitemap access & contact About Research Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links Japanese