Table 2.
Characteristics of the study group (n = 14,044), depending on the screen time (ST) duration and the odds ratio (OR; CI, confidence interval) for screen time duration within the recommendations (≤ 2 h) depending of analyzed factors.
| Factor | Total [%] |
ST ≤ 2 h [%] |
ST > 2 h [%] |
p-Value * /V Cramer |
OR for ST ≤ 2 h [95% CI] |
|---|---|---|---|---|---|
| Sex | < 0.001 */0.10 | ||||
| Girls n = 7553 | 53.8 | 59.6 | 49.6 | 1.499 (1.401–1.605) ** | |
| Boys n = 6491 | 46.2 | 40.4 | 50.4 | 0.667 (0.623–0.714) ** | |
| Age [years] | < 0.001 */0.07 | ||||
| 13 | 9.0 | 11.1 | 7.6 | 1.0 (reference) | |
| 14 | 13.3 | 14.8 | 12.3 | 0.820 (0.711–0.946) ** | |
| 15 | 14.3 | 13.7 | 14.7 | 0.639 (0.554–0.736) ** | |
| 16 | 17.0 | 16.4 | 17.4 | 0.643 (0.561–0.738) ** | |
| 17 | 19.8 | 19.3 | 20.2 | 0.654 (0.573–0.748) ** | |
| 18 | 18.2 | 17.2 | 18.9 | 0.623 (0.544–0.714) ** | |
| 19 | 8.3 | 7.5 | 8.9 | 0.575 (0.489–0.676) ** | |
| Type of school | < 0.001 */0.04 | ||||
| secondary | 42.1 | 44.5 | 40.4 | 1.185 (1.107–1.269) ** | |
| upper secondary | 57.9 | 55.5 | 59.6 | 0.844 (0.788–0.903) ** | |
| Body weight status | 0.680 | ||||
| underweight | 5.1 | 4.9 | 5.2 | 0.926 (0.793–1.082) | |
| normal | 76.7 | 77.0 | 76.4 | 1.0 (reference) | |
| overweight | 11.6 | 11.4 | 11.8 | 0.959 (0.863–1.067) | |
| obesity | 6.6 | 6.7 | 6.6 | 1.011 (0.882–1.158) |
* significant differences between screen time ≤ 2 h and screen time > 2 h, the Pearson’s chi-square test; ** significant differences p < 0.001, the Wald test.