Table 2.

Linear Regression Modeling of Predictors, ICV:ECV Ratio (R ² 0.921)

Variables	Standardized Beta Coefficient	t	Significance
Constant		33.623	<.0001
OH % of ECV	−0.799	−19.198	<.0001
Fat mass, % of body weight	−0.623	−13.863	<.0001
Diuretics, thiazide‐type (yes/no)	−0.143	−3.356	.001
Body mass index, kg/m2	0.135	2.953	.005
Age	−0.090	−2.052	.045

Abbreviations: ECV, extracellular fluid volume; ICV, intracellular fluid volume; OH%, overhydration relative to the extracellular fluid volume; OH, overhydration as measured by bioimpedance. Result of linear regression modeling, with ICV:ECV as an independent variable in linear regression modeling with stepwise selection. Overall adjusted R ² for the final model: 0.914. Excluded variables from the model (step 5) are sex, presence of diabetes mellitus, number of antihypertensive medications, and creatinine clearance (Cockroft‐Gault formula).