Table 2.
Participant characteristics.
| Total Sample | Grade 3 | Grade 4 | Grade 6 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| (n = 99, 100%) | (n = 22, 22.2%) | (n = 36, 36.4%) | (n = 41, 41.4%) | ||||||
| Characteristics | Mean or n | SD or % |
Mean or n | SD or % |
Mean or n | SD or % |
Mean or n | SD or % |
p |
| Age (Year) | 10.2 | 1.4 | 8.5 | 0.5 | 9.6 | 0.6 | 11.7 | 0.5 | <0.0001 a |
| Height (cm) | 146.0 | 29.3 | 134.8 | 7.3 | 146.3 | 46.5 | 152.0 | 7.4 | <0.0001 a |
| Body Mass (kg) | 37.0 | 9.9 | 29.3 | 4.3 | 34.1 | 8.9 | 43.8 | 8.7 | <0.0001 a |
| BMI Percentile | 52.6 | 29.9 | 53.0 | 25.5 | 51.0 | 29.0 | 53.9 | 33.3 | 0.9180 a |
| Male | 56 | 57.1 | 15 | 68.18 | 15 | 41.67 | 26 | 65.0 | 0.0601 b |
| Race | |||||||||
| White | 69 | 79.3 | 18 | 90 | 21 | 67.7 | 30 | 83.3 | 0.3264 c |
| Black/African American | 3 | 3.5 | 1 | 5.0 | 2 | 6.5 | 0 | 0.0 | |
| Asian | 8 | 9.2 | 0 | 0.0 | 4 | 12.9 | 4 | 11.1 | |
| Mixed Race | 7 | 8.1 | 1 | 5.0 | 4 | 12.9 | 2 | 5.6 | |
| Hispanic | 8 | 9.4 | 2 | 10 | 1 | 3.23 | 5 | 14.7 | 0.4340 c |
| Family Income | |||||||||
| Under $49,999 | 12 | 14.0 | 0 | 0.0 | 7 | 23.3 | 5 | 14.3 | 0.3307 c |
| $50,000–$99,999 | 20 | 23.3 | 5 | 23.8 | 8 | 26.7 | 7 | 20.0 | |
| $100,000–$149,999 | 23 | 26.7 | 6 | 28.6 | 5 | 16.7 | 12 | 34.3 | |
| $150,000–$199,999 | 10 | 11.6 | 3 | 14.3 | 4 | 13.3 | 3 | 8.6 | |
| $200,000 or more | 21 | 24.4 | 7 | 33.3 | 6 | 20.0 | 8 | 22.9 | |
Note: p-values indicating differences between grade levels obtained by using Kruskal–Wallis a, chi-square b, and Fisher’s exact tests c.