Digital screen time and its effect on preschoolers' behavior in China: results from a cross-sectional study.

Background: The aims of the study were to determine the effects of electronic exposure on behaviors of preschoolers, which could provide scientific grounds to the control of digital screen time and usage of electronics.

Methods: Children of 3-6 years of age (n = 1897) and their families were included in this study. The daily screen time were recorded for seven days.