TABLE 2.
Child demographic and anthropometric characteristics by sibling weight status (n = 47)
| Child characteristic | Normal-weight | Overweight/obese1 |
| Age (y) | 8.8 ± 2.32 | 9.0 ± 2.3 |
| Sex (n) | 22/25 | 22/25 |
| Male | ||
| Female | ||
| Race (%) | ||
| Black or African American | 68 | 68 |
| White | 9 | 9 |
| More than one race | 19 | 19 |
| Unknown | 4 | 4 |
| Ethnicity (%) | ||
| Hispanic | 19 | 21 |
| Not Hispanic | 55 | 53 |
| Unknown | 26 | 26 |
| Height (cm) | 131.6 ± 14.7 | 140.2 ± 16.4*** |
| Height-for-age z score | 0.02 ± 0.9 | 1.11 ± 0.9*** |
| Weight (kg) | 29.0 ± 8.7 | 46.2 ± 18.4*** |
| Weight-for-age z score | −0.08 ± 0.7 | 1.7 ± 0.7*** |
| BMI (kg/m2) | 16.4 ± 1.4 | 22.5 ± 4.9*** |
| BMI z score | −0.04 ± 0.5 | 1.60 ± 0.6*** |
| BMI-for-age percentile | 48.5 ± 19.5 | 92.0 ± 6.0*** |
| Body fat (%)3 | 19.4 ± 0.8 | 31.3 ± 1.3*** |
| Fat-free mass (kg)3 | 22.1 ± 7.0 | 28.9 ± 10.4** |
1
Paired t test for continuous variables: **P < 0.01, ***P < 0.001.
2
Mean ± SD (all such values).
3
Based on 44 sibling pairs who participated in the body-composition analysis.