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Research Letter
February 4, 2019

Prevalence and Likelihood of Meeting Sleep, Physical Activity, and Screen-Time Guidelines Among US Youth

Author Affiliations
  • 1Department of Health Promotion and Behavioral Science, The University of Texas Health Science Center at Houston, Dallas
  • 2Michael and Susan Dell Center for Healthy Living, The University of Texas Health Science Center at Houston, Austin
  • 3Department of Epidemiology, Human Genetics, and Environmental Sciences, The University of Texas Health Science Center at Houston, Austin
  • 4Department of Kinesiology and Health Education, The University of Texas at Austin, Austin
  • 5The University of Texas MD Anderson Cancer Center, Houston
  • 6Dell Medical School, The University of Texas at Austin, Austin
JAMA Pediatr. 2019;173(4):387-389. doi:10.1001/jamapediatrics.2018.4847

Sleep, physical activity, and screen-time behaviors among adolescents are risk factors for physical health (eg, obesity), mental and emotional health, behavioral outcomes (eg, tobacco use), and performance-based outcomes (eg, academic achievement).1-3 Accordingly, it is recommended that children (age 6-12 years) sleep 9 to 12 hours and adolescents (age 14-18 years) sleep 8 to 10 hours a night and that both groups accumulate at least 1 hour of moderate-intensity or vigorous-intensity aerobic physical activity and limit screen time (ie, exposure to all screen-based digital media) to less than 2 hours within a 24-hour period.3,4 Meeting recommendations for all 3 behaviors may have a greater association with health outcomes than meeting any 1 recommendation in isolation. However, the prevalence and likelihood of US adolescents meeting these recommendations in combination across various sociodemographic factors is unknown.

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