| Unstandardized beta | Standard Error | Standardized beta | P | 95%-CI |
---|---|---|---|---|---|
Model 1 | |||||
 Intercept | 43.95 | 0.77 |  | < 0.001 | 42.44; 45.46 |
 Outdoor play | |||||
  Low (<  1 h day) | 0 (Ref) |  |  |  |  |
  Medium (1–2 h/day) | 9.81 | 1.14 | 0.20 | < 0.001 | 7.56; 12.06 |
  High (≥2 h/day) | 14.70 | 1.22 | 0.27 | < 0.001 | 12.32; 17.09 |
Model 2 | |||||
 Intercept | 93.07 | 2.81 |  | < 0.001 | 87.55; 98.59 |
 Outdoor play | |||||
  Low (<  1 h day) | 0 (Ref.) |  |  |  |  |
  Medium (1–2 h/day) | 0.85 | 1.09 | 0.02 | 0.434 | −1.29; 2.99 |
  High (≥2 h/day) | 3.87 | 1.20 | 0.07 | 0.001 | 1.53; 6.22 |
 Age (years) | −3.08 | 0.15 | −0.43 | < 0.001 | −3.37; −2.79 |
 Sex | |||||
  Male | 0 (Ref.) |  |  |  |  |
  Female | −10.85 | 0.88 | −0.23 | < 0.001 | − 12.58; −9.11 |
 BMI | |||||
  Normal weight | 0 (Ref.) |  |  |  |  |
  Underweight | −0.50 | 1.52 | −0.01 | 0.744 | −3.49; 2.49 |
  Overweight | −2.96 | 1.31 | −0.04 | 0.024 | −5.53; −0.38 |
  Obese | −5.31 | 2.30 | −0.04 | 0.021 | −9.82; −0.80 |
 Socio-economic status | |||||
  Low | 0 (Ref.) |  |  |  |  |
  Middle | 1.10 | 1.69 | 0.02 | 0.514 | −2.22; 4.42 |
  High | 3.62 | 1.83 | 0.07 | 0.047 | 0.04; 7.20 |