Screen time average (hours) | Percentage of screen overuse (≥ 4 h of screen time) | |||||||
---|---|---|---|---|---|---|---|---|
2018 | 2019 | 2020 | 2021 | 2018 | 2019 | 2020 | 2021 | |
All ages (N = 63,211) | 2.38 | 2.41 | 2.70 | 2.59 | 18,746 (22.72%) | 18,212 (24.39%) | 26,253 (32.80%) | 25,612 (29.41%) |
P value | – | 0.0045 | < 0.0001 | < 0.0001 | – | 0.0002 | < 0.0001 | < 0.0001 |
Elementary school (age 6–10 years) (n = 21,857) | 1.98 | 2.02 | 2.37 | 2.21 | 6478 (11.78%) | 6249 (13.55%) | 9130 (20.78%) | 9983 (17.15%) |
P value | – | 0.0635 | < 0.0001 | < 0.0001 | – | 0.0026 | < 0.0001 | < 0.0001 |
Middle school (age 11–13 years) (n = 15,634) | 2.46 | 2.47 | 2.79 | 2.67 | 4561 (24.36%) | 4564 (24.30%) | 6509 (34.59%) | 5974 (30.48%) |
P value | – | 0.9190 | < 0.0001 | < 0.0001 | – | 0.9455 | < 0.0001 | < 0.0001 |
High school (age 14–17 years) (n = 25,720) | 2.80 | 2.86 | 3.03 | 3.01 | 7707 (34.88%) | 7399 (38.00%) | 10,614 (45.83%) | 9655 (43.57%) |
P value | – | 0.0002 | < 0.0001 | 0.0540 | – | < 0.0001 | < 0.0001 | 0.0012 |