TABLE 3.

Impact of body composition slope on the pattern of ERI over time.

	Change in ERI trajectory over time, IU/kg/week/g/dL per year
Slope of	Unadjusted	P	Multivariate*	P
BMI, kg/m2 per year	−0.5 (−1.5, 0.5)	0.301	−0.5 (−1.5, 0.5)	0.299
SMI, kg/m2 per year	−0.2 (−2.1, 1.8)	0.873	−0.2 (−2.1, 1.8)	0.872
AC, cm per year	−1.2 (−1.9, −0.5)	0.001	−1.2 (−1.9, −0.5)	0.001
AMC, cm per year	−1.6 (−2.3, −0.8)	<0.001	−1.6 (−2.3, −0.8)	<0.001
PBF, % per year	−0.2 (−0.4, 0.1)	0.161	−0.2 (−0.4, 0.1)	0.152
VFA, cm2 per year	−0.0 (−0.1, −0.0)	0.048	−0.1 (−0.1, −0.0)	0.036
ECW/TBW, % per year	1.8 (0.7, 2.9)	0.002	1.8 (0.7, 2.9)	0.002
PhA, ° per year	−3.4 (−5.5, −1.2)	0.002	−3.4 (−5.6, −1.3)	0.002

The slope of each body composition parameter was estimated using the linear regression model. *Multivariate analysis was adjusted for age, sex, and modified Charlson comorbidity index. AC, arm circumference; AMC, arm muscle circumference; BMI, body mass index; ECW/TBW, the ratio of extracellular water to total body water; ERI, erythropoiesis-stimulating agent resistance index; PBF, percent body fat; PhA, phase angle; SMI, skeletal muscle mass index; VFA, visceral fat area.