TABLE 4.
Standardized regression coefficients (± SE) and coefficient of determination (R2) for the agreement between age- and sex-specific Z-scores for percentage body fat (%BF) and individual anthropometric measures among children with lower BMI but higher %BF and higher BMI but lower %BF1,2
| Lower BMI but higher %BF |
Higher BMI but lower %BF |
|||||
|---|---|---|---|---|---|---|
| Both sexes (n = 456) | Boys (n = 217) | Girls (n = 239) | Both sexes (n = 518) | Boys (n = 293) | Girls (n = 225) | |
| BMI Z-score | 0.05±0.04a (0.004) | 0.04±0.06a (0.002) | 0.09±0.05 (0.01) | 0.45±0.09§ (0.05) | 0.35±0.14§ (0.03) | 0.52±0.14§ (0.10) |
| WC Z-score | 0.10±0.02§a (0.04) | 0.12±0.04§a (0.06) | 0.07±0.04 (0.02) | 0.49±0.05§ (0.20) | 0.50±0.10§ (0.15) | 0.45±0.07§ (0.26) |
| WHtR Z-score | 0.14±0.04§ab (0.06) | 0.22±0.04§ab (0.13) | 0.07±0.05 (0.02) | 0.57±0.05§ (0.29) | 0.65±0.06§ (0.29) | 0.45±0.08§ (0.27) |
| TSF Z-score | 0.24±0.04§b (0.19) | 0.34±0.03§b (0.29) | 0.16±0.04‡§ (0.10) | 0.50±0.04§ (0.35) | 0.65±0.05§ (0.46) | 0.33±0.05‡§ (0.21) |
Abbreviations: BMI, body mass index; R2, coefficient of determination; TSF, triceps skinfold thickness; WC, waist circumference; WHtR, waist-to-height ratio.
Lower BMI but higher %BF: BMI< median but %BF≥ median.
Higher BMI but lower %BF: BMI≥ median but %BF< median.
differed from boys within race-ethnicity
coefficients differ from zero (P < 0.05; t-test).
Values in a subgroup (e.g., by sex) with different superscript letters (a or b) were significantly different (P < 0.05; t-test); a group without the letters indicates no difference (P ≥ 0.05; t-test).
Values in a subgroup (e.g., by sex) with different superscript letters (a or b) were significantly different (P < 0.05; t-test); a group without the letters indicates no difference (P ≥ 0.05; t-test).