Table 1 Characteristics of the study population
| Â | Total | Boys | Girls | |||
|---|---|---|---|---|---|---|
| Â | N | Mean (SD) | n | Mean (SD) | n | Mean (SD) |
Age at baseline (years) | 1875 | 5.0 (0.5) | 956 | 5.0 (0.5) | 919 | 5.0 (0.5) |
Age at follow-up (years) | 1407 | 7.0 (1.2) | 714 | 7.1 (1.1) | 693 | 7.0 (1.3) |
Gender of parent (female) | 1830 | 97.8% | 935 | 97.7% | 895 | 97.7% |
Maternal education (missing n = 186) |  |  |  |  |  | |
Low maternal education | 4 | 0.2% | 3 | 0.3% | 1 | 0.1% |
Mid-low maternal education | 155 | 8.7% | 81 | 8.9% | 74 | 8.4% |
Mid-high maternal education | 687 | 38.4% | 336 | 36.9% | 351 | 39.9% |
High maternal education | 943 | 52.7% | 490 | 53.8% | 453 | 51.5% |
Parent perceived neighborhood characteristics | Â | Â | Â | Â | ||
Satisfaction (range 1-5) | 1875 | 3.8 (0.9) | 956 | 3.8 (0.9) | 919 | 3.8 (0.9) |
Functionality (range 1-5) | 1875 | 3.0 (0.8) | 956 | 3.0 (0.8) | 919 | 3.0 (0.8) |
Traffic safety (range 1-5) | 1875 | 3.3 (1.0) | 956 | 3.2 (1,0) | 919 | 3.3 (1.0) |
Attractiveness (range 1-5) | 1875 | 3.9 (0.6) | 956 | 3.9 (0.6) | 919 | 3.9 (0.5) |
Accessibility (range 0-7)†| 1875 | 3.4 (1.5) | 956 | 3.4 (1.5) | 919 | 3.4 (1.5) |
Outside play at 5 years‡ | 1875 | 619.2 (365.4) | 956 | 648.6 (365.4)* | 919 | 588.6 (363.1)* |
Outside play at 7 years‡ | 1317 | 683.5 (347.1) | 664 | 708.8 (344.9)* | 653 | 659.7 (347.9)* |