There appears to be a significant association between increased screen viewing time and reduced sleep duration in young children, with the association being stronger in those aged 6 months and below

In January 2019 researchers from Singapore, USA and Germany published the results of their study to assess the association between screen viewing time and sleep duration in children aged 2 years and under. A total of 714 Singaporean children were included in the study. Information on screen viewing time and sleep duration was collected from the parents via interviewer-administered questionnaires. Results showed that 28% of children up to 6 months and 74% of children aged 7-24 months experienced daily screen viewing. Television viewing was reported for 44% of all children and mobile device screen viewing for 30%. Children up to 6 months had an average sleep duration of 15.6 hours and children aged 7-24 months an average of 12.4 hours. Analysis revealed that each 1 hour per day increase in screen viewing time was significantly associated with 0.26 hour shorter sleep duration, with similar significant associations for television and mobile devices. A further analysis revealed significantly greater reductions in sleep with higher screen viewing among children aged 6 months and below, while associations were weaker in older children.

Chen B et al. Screen viewing behavior and sleep duration among children aged 2 and below. BMC Public Health. 2019 Jan 14;19(1):59

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