. Author manuscript; available in PMC: 2015 Apr 29.

Published in final edited form as: J Bone Miner Res. 2011 Sep;26(9):2217–2225. doi: 10.1002/jbmr.414

Table 2.

Bivariate correlations between anthropometric characteristics, maturity, ethnicity and pQCT measures of fat, muscle, and indices of bone strength (BSI, SSI) in young girls

	Height	Body mass	BMI	Femur length	Tibia length	Maturity	Ethnicity
Thigh SAT	0.23^a	0.72^a	0.85^a	0.22^a	0.22^a	0.34^a	0.03
Thigh muscle density	0.15^a	−0.07	−0.21^a	0.20^a	0.11^a	0.14^a	−0.06
Thigh MCSA	0.61^a	0.78^a	0.65^a	0.56^a	0.52^a	0.67^a	−0.01
4% Femur BSI	0.53^a	0.62^a	0.47^a	0.45^a	0.46^a	0.59^a	0.01
20% Femur SSI	0.82^a	0.78^a	0.49^a	0.76^a	0.73^a	0.82^a	0.06
Calf SAT	0.20^a	0.70^a	0.83^a	0.17^a	0.21^a	0.29^a	0.01
Calf muscle density	0.10^a	−0.09	−0.20^a	0.10^a	0.05	0.10^a	−0.09
Calf MCSA	0.69^a	0.85^a	0.69^a	0.58^a	0.59^a	0.76^a	−0.03
4% Tibia BSI	0.53^a	0.65^a	0.51^a	0.46^a	0.45^a	0.57^a	−0.01
66% Tibia SSI	0.77^a	0.78^a	0.53^a	0.71^a	0.69^a	0.77^a	0.03

SAT = subcutaneous adipose tissue (mm²); MCSA = muscle cross-sectional area (mm²); BSI = bone strength index (mg²/mm⁴); SSI = strength-strain index (mm³).

Significant, p < 0.05; Pearson’s r for continous and Spearman’s rho for categorical variables.