A meta-analysis found that on days with more screen use, youths went to bed slightly later but had no significant changes in total sleep time, sleep quality, or efficiency.

Question What is the within-person association between daily screen use and sleep in children and youth?

Findings In this systematic review and meta-analysis, daily screen use was significantly related to later sleep onset but was not significantly related to total sleep time, sleep onset latency, sleep efficiency, wake after sleep onset, or subjective sleep quality.

Meaning When young people use screens, they may displace sleep when doing so; however, using screens more than usual is not necessarily detrimental to sleep.