Table 1 Descriptive statistics of dependent and independent variables, by gender
Variables | Total (n = 294) | Boys (n = 149) | Girls (n = 145) |
|---|---|---|---|
| Â | Mean (sd) or percent | ||
MVPA | 21.4 (14.0) | 24.6 (15.2) | 18.2 (11.9)* |
Demographic variables | Â | Â | Â |
Age, years | 15.4 (1.7) | 15.4 (1.7) | 15.3 (1.7) |
Race/ethnicity (% white) | 93.5 | 93.3 | 93.8 |
Parent education (% college or more) | 66.0 | 69.3 | 62.8 |
Free or reduced price lunch (%) | 7.1 | 8.7 | 5.5 |
Overweight (%) | 18.7 | 20.1 | 17.2 |
Physical maturation | 3.0 (0.7) | 2.7 (0.6) | 3.3 (0.6)* |
Individual variables | Â | Â | Â |
Self-efficacy | 31.1 (4.5) | 31.5 (4.2) | 30.6 (4.8) |
Enjoyment | 29.9 (5.0) | 30.3 (4.9) | 29.4 (5.1) |
Barriers | 22.6 (6.4) | 21.2 (5.7) | 24.1 (6.7)* |
Social variables | Â | Â | Â |
Parent support | 11.3 (3.5) | 11.2 (3.4) | 11.4 (3.7) |
Peer support | 11.6 (3.9) | 11.9 (3.8) | 11.2 (4.1) |
Parent physical activity | 39.6 (49.9) | 36.1 (49.5) | 43.1 (50.3) |
Environmental variables | Â | Â | Â |
Home PA equipment1 | 251.7 (132.1) | 271.9 (149.4) | 230.9 (108.3)* |
Temperature, degrees Fahrenheit | 32.1 (11.7) | 31.9 (11.8) | 32.2 (11.7) |
Precipitation, inches | 1.7 (1.1) | 1.7 (1.1) | 1.7 (1.2) |
Snow, inches | 6.1 (4.6) | 6.1 (4.6) | 6.0 (4.6) |
Neighborhood safety | 8.3 (2.2) | 8.0 (2.1) | 8.6 (2.2)* |
Walking infrastructure | 13.7 (3.0) | 13.6 (3.1) | 13.7 (2.9) |
Distance to park2 | 3.4 (2.8) | 3.4 (3.1) | 3.4 (2.5) |
Distance to rec center2 | 1.5 (1.3) | 1.7 (1.6) | 1.4 (1.0) |
Distance to trail2 | 1.3 (2.8) | 1.5 (3.4) | 9.9 (2.1) |
Distance to school attended2 | 6.3 (5.9) | 6.1 (5.2) | 6.5 (6.6) |
Walkability index3 | 0.2 (2.4) | 0.1 (2.5) | 0.3 (2.4) |