Evening media exposure reduces night-time sleep

AimTo investigate whether evening media exposure, bedroom media use and night-time sleep duration at age 6months are associated with night-time sleep duration in 12-month-old Thai infants. MethodsWe enrolled 208 infants in this study at 6months of age. They were followed-up at 12months of age. A sleep diary was used to document the infant's sleep onset and wake time at each visit. Night-time sleep duration was then calculated at both ages. Screen media exposure in the household was assessed in depth at both visits. ResultsInfants who were exposed to screen media in the evening at 12months of age had a 28-min decrease in 12-month night-time sleep duration on weekdays. Moreover, infants who were exposed to screen media in the evening at age 6months and 12months had shorter 12-month night-time sleep duration compared with those who were not exposed to screen media after 7pm at both ages. Night-time sleep duration at 12months of age was also directly related to 6-month night-time sleep duration. ConclusionInfants exposed to screen media in the evening at 12months of age had decreased 12-month night-time sleep duration. To promote good sleep hygiene and optimal sleep for infants at this age, screen media exposure after 7pm should be avoided.