Table 1.
Demographic characteristics of all participants, participants who wore GPS and participants with valid GPS data (Curitiba, Brazil, 2013).
| All participants | Participants wearing GPS | Participants with valid GPS data | χ2 | p | |
|---|---|---|---|---|---|
| Demographic characteristics | n=381 | n=147 | n=80 | ||
| 100% | 38.6% | 11.8% | |||
| Gender, boys, n (%) | 180 (47.2) | 71 (48.3) | 46 (57.5) | 1.88 | >0.05 |
| Age, years, mean (standard deviation) | 14.7 (6.2) | 14.5 (6.0) | 14.5 (5.5) | 1.84 | >0.05 |
| BMI, normal, n (%) | 265 (69.6) | 95 (64.6) | 52 (65.0) | 1.92 | >0.05 |
| Social economic status, intermediate, n (%) | 184 (48.3)1 | 71 (55.0)2 | 42 (58.3)3 | 1.91 | >0.05 |
| Parental gender, women, n (%) | 314 (83.3)4 | 120 (82.2)5 | 63 (79.8) 5 | 1.90 | >0.05 |
| Parental education status, high school, n (%) | 138 (36.6)4 | 60 (41.1) 5 | 32 (40.5) 5 | 1.87 | >0.05 |
1
missing n = 50
2
missing n = 18
3
missing n = 8
4
missing n = 4
5
missing n = 1