Table 4.
Results from the multivariable general linear models evaluating the association of Physical activity and screen time with QOL in Boys and Girls.
| Boys (n = 6388) | ||||
|---|---|---|---|---|
| Variables | SPF QOL | PMH QOL | LE QOL | Total QOL |
| β (95% CI) | β (95% CI) | β (95% CI) | β (95% CI) | |
| PA | ||||
| PA score | 3.752 (3.417, 4.087) ** | 0.862 (0.623, 1.101) ** | 2.403 (2.261, 2.545) ** | 6.276 (5.681, 6.870) ** |
| PA (active vs. inactive) | 3.395 (2.858, 3.931) ** | 1.895 (1.522, 2.267) ** | 2.512 (2.279, 2.744) ** | 6.640 (5.693, 7.586) ** |
| PA ≥ 30 min (1–2 days vs. 0 days) per week | 1.659 (0.978, 2.340) ** | 1.363 (0.890, 1.836) ** | −0.075 (−0.370, 0.221) | 4.316 (3.115, 5.518) ** |
| PA ≥ 30 min (3–4 days vs. 0 days) per week | 2.747 (2.000, 3.495) ** | 1.718 (1.199, 2.237) ** | 0.553 (0.228, 0.877) * | 7.198 (5.879, 8.517) ** |
| PA ≥ 30 min (≥5 days vs. 0 days) per week | 4.842 (4.155, 5.528) ** | 2.055 (1.578, 2.531) ** | 1.814 (1.516, 2.112) ** | 11.522 (10.310, 12.734) ** |
| Screen time | ||||
| Screen time (hour) | −1.294 (−1.536, −1.053) ** | −0.590 (−0.758, −0.422) ** | −0.421 (−0.526, −0.317) ** | −3.192 (−3.616, −2.767) ** |
| Screen time category (high vs. low) | −3.003 (−3.723, −2.283) ** | −1.364 (−1.864, −0.865) ** | −0.939 (−1.251, −0.626) ** | −7.430 (−8.700, −6.160) ** |
| Girls (n = 6253) | ||||
| Variables | SPF QOL | PMH QOL | LE QOL | Total QOL |
| β (95% CI) | β (95%CI) | β (95% CI) | β (95% CI) | |
| PA | ||||
| PA score | 3.099 (2.736, 3.462) ** | −0.010 (−0.256, 0.236) | 2.399 (2.244, 2.554) ** | 6.814 (6.132, 7.496) ** |
| PA (active vs. inactive) | 3.084 (2.594, 3.573) ** | 0.378 (0.049, 0.706) * | 2.342 (2.128, 2.556) ** | 7.124 (6.203, 8.045) ** |
| PA ≥ 30 min (1–2 days vs. 0 days) per week | 1.615 (0.994, 2.235) ** | 1.605 (1.188, 2.021) ** | 0.078 (−0.193, 0.349) | 3.949 (2.781, 5.117) ** |
| PA ≥ 30 min (3–4 days vs. 0 days) per week | 3.061 (2.362, 3.761) ** | 2.085 (1.616, 2.555) ** | 0.848 (0.542, 1.154) ** | 7.512 (6.196, 8.827) ** |
| PA ≥ 30 min (≥5 days vs. 0 days) per week | 4.416 (3.761, 5.070) ** | 2.582 (2.143, 3.021) ** | 1.737 (1.451, 2.024) ** | 10.989 (9.758, 12.221) ** |
| Screen time | ||||
| Screen time (hour) | −1.411 (−1.693, −1.130) ** | −1.015 (−1.204, −0.825) ** | −0.530 (−0.653, −0.407) ** | −3.720 (−4.248, −3.192) ** |
| Screen time category (high vs. low) | −2.845 (−3.693, −1.996) ** | −2.211 (−2.780, −1.642) ** | −1.174 (−1.545, −0.803) ** | −7.787 (−9383, −6.191) ** |
β (95% CI), Regression coefficients and 95% confidence intervals; PA, physical activity; QOL, quality of life; SPF, social and psychological function; PMH, physiological and mental health; LE, living environment; * 0.05, ** 0.01. The model was adjusted for age, place of residence, socioeconomic status and smoking, physical activity (regarding screen time) and screen time (regarding physical activity). The VIF values did not provide evidence of multicollinearity among the predictor variables (VIF < 10), therefore, the order of factors in the model is not explained.