Evolution of screen use among youth between 2012 and 2020 in Switzerland.

Aim: To compare the evolution of screen and Internet use by youths between 2012 and 2020 in Switzerland.

Methods: Cross-sectional studies of 10th-graders (age 13-14) were performed in Switzerland in 2012 and 2020, and compared in bivariate and multivariate analyses on sociodemographic, schooling, physical activity, emotional well-being, and screen use variables.

Results: We found that screen use had shifted to smartphones with 71.