Table 1 Demographic characteristics of participants
Variable | Overall (n = 3697) | Boys (n = 1805) | Girls (n = 1892) | P-value |
|---|---|---|---|---|
n (%)or mean ± SD or medians (IQRs) | ||||
Age in years | 12.9 ± 2.6 | 13.0 ± 2.6 | 12.9 ± 2.6 | 0.76 |
Grade | 0.66 | |||
4–6 | 1293 (35.0%) | 628 (34.8%) | 664 (35.1%) | |
7–9 | 1209 (32.7%) | 581 (32.2%) | 628 (33.2%) | |
10–12 | 1195 (32.3%) | 596 (33.0%) | 599 (31.7%) | |
Residential location1 | 0.49 | |||
Urban | 2049 (55.4%) | 994 (55.1%) | 1055 (55.8%) | |
Rural | 1555 (42.1%) | 760 (42.1%) | 794 (42.0%) | |
Economic development | 0.95 | |||
High | 986 (26.7%) | 486 (27.0%) | 500 (26.5%) | |
Moderate | 916 (24.8%) | 446 (24.7%) | 470 (24.9%) | |
Low | 1795 (48.5%) | 873 (48.3%) | 922 (48.7%) | |
Number of children2 | < 0.01 | |||
one | 1402 (37.9%) | 749 (41.5%) | 652 (34.5%) | |
more | 2284 (61.8%) | 1051 (58.2%) | 1233 (65.2%) | |
Living with3 | 0.41 | |||
Both parents | 2917 (78.9%) | 1441 (79.8%) | 1475 (78.0%) | |
Grandparent(s) | 520 (14.1%) | 250 (13.9%) | 270 (14.3%) | |
One parent | 235 (6.4%) | 105 (5.8%) | 130 (6.9%) | |
PA level | < 0.01 | |||
sufficient | 1553 (42.1%) | 809 (44.9%) | 744 (39.4%) | |
insufficient | 2144 (57.9%) | 996 (55.1%) | 1148 (60.6%) | |
Students’ MVPA4 | 42.9 (21.4–77.1) | 45.7 (23.8–81.4) | 39.3 (20.0–74.1) | < 0.01 |
Parents’ MVPA4 | 30.0 (4.3–77.1) | 28.6 (2.1–77.1) | 30.0 (5.7–75.7) | 0.36 |
Parents’ SB4 | 120.0 (8.6–231.4) | 114.3 (0–228.6) | 120.0 (15.5–235.7) | 0.38 |