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Table 2 Models tested with the validation criteria and methods used by the authors

From: Concordance between appendicular skeletal muscle mass measured with DXA and estimated with mathematical models in middle-aged women

Models developed by

Criterion method used by authors

Models specification

Model

R 2

SEE

Lee et al. (2000)

MRI

Circumference-skin fold model

ASM 1 = height (0.00744 × CAG2 + 0.00088 × CTG2 + 0.00441 × CCG2) + 2.4 × sex − 0.048 × age + race + 7.8 (where sex: females = 0, males = 1 and race: Asian = − 2, African American = 1.1, Hispanics = 0)

0.91

2.2

Weight-height model

ASM 2 = 0.244 × weight + 7.80 × height + 6.6 × sex − 0.098 × age + race − 3.3 (where sex: female = 0, male = 1 and race: Asian = − 1.2, African American = 1.4, Hispanic = 0)

0.86

2.8

Wen et al. (2011)

DXA

Circumference-skin fold model

ASM 3 = height (0.001509 × CAG2 + 0.000855 × CTG2 + 0.0007709 × CCG2) − 4.044 × sex+ 0.149 × weight − 0.038 × age + 12.246 (where sex: female = 2, male = 1)

0.92

1.44

Weight-height model

ASM 4 = 0.193 × weight + 0.107 × height − 4.175 × gender − 0.037 × age − 2.631 (where sex: female = 2, male = 1)

0.90

1.63

  1. r correlation coefficients, R2 determination coefficients, SEE standard error of estimate