Media use in association to sleep quality in German preschoolers. A mediation analysis based on the Ulm SPATZ Health Study.

Purpose Evidence suggests a relation of digital media use with poor sleep quality and inadequate sleep quantity. However, longitudinal data in preschoolers simultaneously investigating several aspects of adequate sleep and potential mediation are scarce. Methods We used parent-reported data from self-administered questionnaires in three yearly follow-ups at child ages 4, 5, and 6 years. Sleep quality was measured by the total score of the Children’s Sleep Habits Questionnaire (CSHQ; German version). Average digital media use and book reading were ascertained separately for weekends and work days. Sleep duration…