Table 1.
Baseline Characteristics
| Gender | |||||||
|---|---|---|---|---|---|---|---|
|
OVERALL Mean (SD) or N and % |
Female (N=897) Mean (SD) or N and % |
Male (N=767) Mean (SD) or N and % |
p-value**
|
||||
| Age (years) | 11.28 | (0.55) | 11.22 | (0.50) | 11.35 | (0.60) | <.0001 |
| Number of Laps | 20.63 | (11.60) | 18.53 | (9.33) | 23.09 | (13.38) | <.0001 |
| BMI Percentile | 73.75 | (27.48) | 72.37 | (27.35) | 75.35 | (27.57) | 0.0264 |
| BMI Category | 0.0019 | ||||||
| < 85th Percentile | 818 | 49.2% | 471 | 52.5% | 347 | 45.2% | |
| 85th – 94th Percentile | 331 | 19.9% | 184 | 20.5% | 147 | 19.2% | |
| ≥ 95th Percentile | 515 | 30.9% | 242 | 27.0% | 273 | 35.6% | |
| Race/Ethnicity | 0.3107 | ||||||
| Hispanic | 1044 | 62.7% | 573 | 63.9% | 471 | 61.4% | |
| Black | 276 | 16.6% | 151 | 16.8% | 125 | 16.3% | |
| White | 344 | 20.7% | 173 | 19.3% | 171 | 22.3% | |
| Positive Reported 1st Degree Family History of Diabetes | 215 | 12.9% | 115 | 12.8% | 100 | 13.0% | 0.9214 |
| Highest Household Education | 0.8817 | ||||||
| ≤ HS Graduate | 837 | 50.3% | 473 | 52.7% | 364 | 47.5% | |
| ≥ Some college | 827 | 49.7% | 424 | 47.3% | 403 | 52.5% | |
| 6th Grade Pubertal Status | * | ||||||
| Tanner Stage 1 | 168 | 10.1% | 49 | 5.5% | 119 | 15.5% | |
| Tanner Stage 2 | 436 | 26.2% | 120 | 13.4% | 316 | 41.2% | |
| Tanner Stage 3 | 669 | 40.2% | 379 | 42.3% | 290 | 37.8% | |
| Tanner Stage 4 | 357 | 21.5% | 315 | 35.1% | 42 | 5.5% | |
| Tanner Stage 5 | 34 | 2.0% | 34 | 3.8% | 0 | 0 | |
*
Test does not converge due to zero cells.
**
p-values obtained from generalized linear mixed models taking account of sources of variability within and between schools.