Table 6.
Multilevel modelling results: odds ratios (OR) and 95% confidence intervals (95% CI) for child- and school-level characteristics.
| IOTF | ||||
|---|---|---|---|---|
| Parameters | Null model (M 0) | Model 1 (M 1) | Model 2 (M 2) | Model 3 (M 3) |
| Regression coefficients (fixed effects) | ||||
| Level-1: child level | ||||
| Intercept | 0.18 (0.12–0.28)∗ | 5.71 (3.35–9.74)∗ | 1.23 (0.41–3.74)ns | 33.48 (11.56–96.98)∗ |
| Age | 0.16 (0.14–0.18)∗ | 0.15 (0.14–0.18)∗ | 0.15 (0.14–0.17)∗ | |
| Sex (boys)a | 2.71 (2.25–3.25)∗ | 2.74 (2.30–3.27)∗ | 2.94 (2.49–3.46)∗ | |
| Interaction (age-by-sex) | 0.74 (0.70–0.78)∗ | 0.74 (0.70–0.78)∗ | 0.75 (0.72–0.79)∗ | |
| Maturity offset (yrs to PHV) | 14.19 (12.00–16.78)∗ | 14.35 (12.14–16.97)∗ | 14.34 (12.12–16.96)∗ | |
| PFz | 0.80 (0.76–0.84)∗ | 0.80 (0.76–0.84)∗ | 0.80 (0.76–0.83)∗ | |
| Geographical area of residence (high altitude)¤ | 0.08 (0.04–0.18)∗ | |||
| Geographical area of residence (Amazon region) | 1.50 (0.94–2.40)ns | |||
| Level-2: school level | ||||
| Number of students† | 1.02 (1.01–1.03)∗ | 0.97 (0.96–0.98)∗ | ||
| School setting (urban)Ɵ | 0.58 (0.32–1.05)ns | 1.19 (0.81–1.74)ns | ||
| Existence policies or/and practices for physical activity (policies)∞ | 5.09 (2.61–9.94)∗ | 5.64 (3.37–9.45)∗ | ||
| Existence policies or/and practices for physical activity (practices) | 2.83 (1.83–4.38)∗ | 1.40 (1.01–1.93)∗ | ||
| Playground area (without obstacles)£ | 1.67 (0.62–4.51)ns | 0.09 (0.04–0.24)∗ | ||
| Multisports-roofed (no)¥ | 2.44 (1.53–3.89)∗ | 0.40 (0.24–0.66)∗ | ||
| Frequency of physical education classes (two)α | 1.87 (0.43–8.19)ns | 0.03 (0.01–0.13)∗ | ||
| Duration of physical education classes (>90 min)§ | 3.02 (1.84–4.96)∗ | 4.16 (3.04–5.69)∗ | ||
| Extracurricular activities (no)∆ | 0.59 (0.37–0.92)∗ | 0.82 (0.60–1.12)ns | ||
| Variance components (random effects) | ||||
| Intercept | 0.87 ± 0.30 | 1.07 ± 0.38 | 0.07 ± 0.03 | 0.00 ± 0.00 |
| Model summary | ||||
| Deviance | 7927.97 | 6524.56 | 6480.93 | 6453.66 |
| Number of estimated parameters | 2 | 7 | 16 | 18 |
∗ p < 0.001; ns = nonsignificant; agirls are the reference; ¤sea level is the reference; †divided by 10; Ɵmixed is the reference; ∞no policies and practices is the reference; £with obstacles is the reference; ¥yes is the reference; αone is the reference; §90 min is the reference; ∆yes is the reference. PFz = total physical fitness score.