Table 4 Relations between undeveloped green spaces and frequency of being physically active in free-time outside of school hours

Meadows (per 5% land coverage)

1.03 (0.93-1.13)

0.98 (0.87-1.08)

N/A

Treed areas (per 5% land coverage)

1.07 (1.03-1.11)

N/A

1.05 (1.01-1.10)

Gender (female vs. male)

0.64 (0.56-0.74)

0.64 (0.55-0.74)

0.64 (0.55-0.73)

Grade (per grade)

0.78 (0.73-0.85)

0.79 (0.73-0.86)

0.78 (0.72-0.85)

Race (non-white vs. white)

0.64 (0.55-0.75)

0.69 (0.56-0.83)

0.72 (0.61-0.85)

Perceived family wealth (per 1 unit change)

1.17 (1.10-1.25)

1.15 (1.09-1.22)

1.14 (1.08-1.21)

Parents in household (dual vs. single)

0.88 (0.75-1.02)

0.96 (0.81-1.24)

0.95 (0.80-1.12)

Season of survey (winter vs. fall and spring)

0.78 (0.64-0.94)

0.81 (0.68-0.98)

0.81 (0.67-0.97)

Park and playground space (per 5% land coverage)

0.95 (0.90-1.01)

0.99 (0.94-1.05)

1.00 (0.96-1.05)

Recreation facilities (per each additional facility)

0.94 (0.90-0.99)

0.95 (0.91-0.99)

0.96 (0.92-1.02)

Perceived neighborhood safety (per 1 unit change)

1.27 (1.18-1.37)

1.22 (1.13-1.31)

1.21 (1.12-1.30)

Low speed roads (per 10% distance ≤ 50 km/h)

1.04 (0.95-1.14)

N/A

N/A

Average income (per $10,000)

1.04 (0.98-1.08)

N/A

N/A