Table 1

Median age at maturity, and summary of SITAR analyses of RUS bone score on age fitted to the four groups by sex and ethnicity

White boysBlack boysWhite girlsBlack girls
N of subjects/measurements106/575214/1803101/615186/1572
Median age at maturity (years)16.517.015.015.0
Spline degrees of freedom5776
Residual SD (bone score units)29302223
SD of tempo random effect (%)
SD of velocity random effect (%)20202215
Tempo–velocity correlation0.20.2–0.2–0.2
Variance explained (%)89929291
  • RUS, radius, ulna and short bones.