TABLE 2.
Estimates of the mixed effects model.
| s2 | B | SE | DF | t-value | p | ||
| Random | Class | 0.003 | |||||
| Child | 0.18 | ||||||
| Date | 0.05 | ||||||
| Fixed | (Intercept) | 9, 525.63 | 235.70 | 49.49 | 40.41 | < 0.001 | |
| Condition: MMI vs. SNI | –200.23 | 406.91 | 20.48 | –0.49 | 0.628 | ||
| Condition: control vs. SNI | 1, 099.32 | 518.85 | 33.81 | 2.12 | 0.042 | ||
| Short term | 2, 460.11 | 866.12 | 64.75 | 2.84 | 0.006 | ||
| Long-term | 904.33 | 870.56 | 64.71 | 1.04 | 0.303 | ||
| Sex: male vs. female | 847.19 | 271.06 | 431.44 | 3.13 | 0.002 | ||
| Age (c) | –472.17 | 147.49 | 100.86 | –3.20 | 0.002 | ||
| BMI (z) | –180.07 | 118.71 | 431.27 | –1.52 | 0.130 | ||
| Mean temperature (c) | –102.67 | 56.23 | 64.99 | –1.83 | 0.072 | ||
| Hours of sunshine (c) | 154.38 | 56.30 | 62.04 | 2.74 | 0.008 | ||
| Hours of precipitation (c) | –152.56 | 137.28 | 60.70 | –1.11 | 0.271 | ||
| Humidity (c) | 65.17 | 19.98 | 58.42 | 3.26 | 0.002 | ||
| Athletic competence (c) | 787.73 | 160.09 | 434.47 | 4.92 | < 0.001 | ||
| Weekend: week vs. weekend | −1, 081.61 | 362.17 | 57.97 | –2.99 | 0.004 | ||
| Type: primary vs. secondary | 61.18 | 490.88 | 48.65 | 0.12 | 0.901 | ||
| Short term ∗ control vs. SNI | –197.63 | 482.24 | 2068.60 | –0.41 | 0.682 | ||
| Short term ∗ MMI vs. SNI | −1, 287.78 | 860.40 | 100.96 | –1.50 | 0.138 | ||
| Long-term ∗ control vs. SNI | −1, 484.66 | 484.38 | 1929.41 | –3.07 | 0.002 | ||
| Long-term ∗ MMI vs. SNI | −1, 172.62 | 925.66 | 124.55 | –1.27 | 0.208 |
Nparticipants = 446, Nobservations = 5388. Marginal R2 = 0.08, Conditional R2 = 0.29. MMI, mass media intervention; SNI, social network intervention; (c), centered; (z), standardized.