Table 3: Multicomponent anthropometric model matrix, precision, and internal cross-validity for simultaneously measuring of body composition in boys.

FM BMC LST

Height (cm)−0.08570.00320.0820
Weight (kg)0.31390.03920.6419
SkSi (mm)0.1970−0.0095−0.1964
SkHab (mm)0.2350−0.0105−0.2321
PHV (yr)−0.65710.05250.7047
Precision
0.98080.99300.9981
 Adj 0.98050.99290.9981
(kg)1.66600.19231.7480
Cross-validation
 PRESS1162.43315.372551280.083
0.94900.94020.9804
(kg)0.08500.00980.0892

: estimated parameter vector; FM: fat mass, BMC: bone mineral content; LST: lean soft tissue; Sk: skinfold; SkSi: suprailiac; SkHab: horizontal abdominal; PHV: age for peak height velocity; : coefficient of determination (observed and cross-predicted); Adj : adjusted coefficient of determination; : residual standard error of estimate; PRESS: sum of squares of residuals; PRESS: press coefficient of determination; : press standard error of estimate.