Table 1.

Pearson's correlation coefficients between LBM, measured by DEXA, and its possible surrogates in 118 randomly selected MHD patients

Variable	Model 1a	Model 2b	Model 3c	Model 4d
Mid-arm muscle circumference	0.72e	0.58e	0.65e	0.54e
Serum creatinine	0.40e	0.19f	0.25g	0.36g
Serum albumin	0.24g	−0.08	−0.08	−0.10
Serum prealbumin	0.02	0.05	−0.14	−0.12
Triceps skinfold	0.02	−0.03	−0.11	−0.12

Bold = statistically significant correlation coefficients >0.10.

^aModel 1 includes each surrogate separately as dependent variable and LBM as independent variable in the model without adjustment.

^bModel 2 includes each surrogate separately plus case-mix variables include age, gender, race/ethnicity, diabetes, dialysis vintage, insurance (medicare), marital status, modified Charlson comorbidity score, dialysis dose (Kt/V), and kidney residual urine in the model.

^cModel 3 includes all five surrogates in the model.

^dModel 4 includes all five surrogates plus case mix variables in the model.

^eP < 0.001.

^fP = 0.05 to 0.01.

^gP = 0.01 to 0.001.