Table 6.
Correction equations to estimate objectively-measured weight (Kg) using self-reported data
| Girls | Boys | |||||
| n (N) | Correction Equation | R2 | n (N) | Correction Equation | R2 | |
| Grade=8 | ||||||
| African American | 832 (35290) | 11.30+0.85 SRWeight | 68.1% | 720 (38025) | 3.44+0.96 SRWeight | 90.9% |
| Hispanic | 3058 (104284) | -0.04+1.02 SRWeight | 82.0% | 2817 (124777) | 0.46+1.02 SRWeight | 86.1% |
| White/Other | 2992 (125746) | 1.35+1.00 SRWeight | 86.5% | 3269 (136071) | 1.41+0.99 SRWeight | 88.2% |
| Grade=11 | ||||||
| African American | 608 (28565) | 6.24+0.93 SRWeight | 84.7% | 506 (26932) | -5.21+1.08 SRWeight | 93.1% |
| Hispanic | 1847 (71924) | -1.28+1.03 SRWeight | 91.9% | 1714 (78732) | 1.18+0.99 SRWeight | 90.0% |
| White/Other | 2520 (122353) | -0.34+1.02 SRWeight | 92.9% | 2652 (146334) | 2.07+0.97 SRWeight | 88.4% |
Grade 8 students had a mean age of 13.7 years old (SE=0.02) and their percentiles 25% and 75% are 12.7 and 13.7 years old, respectively
White/other category includes non-Hispanic White, Asian, Pacific Islander, Native American, and “other”
Grade 11 students had a mean age of 16.7 years old (SE=0.03) and their percentiles 25% and 75% are 15.7 and 16.7 years old, respectively
n = sample size; N = estimated population size using the sampling weights, R2 = coefficient of determination in percentage; SR = self-reported