Study on the correlation between bioelectrical impedance analysis index and protein energy consumption in maintenance dialysis patients

Table 2 Models including BIA indexes and ISRNM indicators

Models	Indexes in model	Discrimination		Calibration
Models	Indexes in model	C statistics	P value	H-L-type χ2	P value
Model 1a	BMI	0.742(0.703–0.780)	< 0.001**	27.597	0.001
Model 1b	BIA indexes + BMI	0.769(0.729–0.810)	< 0.001**	10.065	0.261
Model 2a	albumin	0.751(0.706–0.796)	< 0.001**	58.122	< 0.001
Model 2b	BIA indexes + albumin	0.818(0.779–0.858)	< 0.001**	5.194	0.737
Model 3a	prealbumin	0.676(0.625–0.727)	< 0.001**	32.637	< 0.001
Model 3b	BIA indexes + prealbumin	0.783(0.742–0.824)	< 0.001**	4.034	0.854
Model 4a	cholesterol	0.762(0.720–0.804)	< 0.001**	76.201	< 0.001
Model 4b	BIA indexes + cholesterol	0.843(0.806–0.880)	< 0.001**	6.197	0.625
Model 5a	AMC	0.685(0.642–0.728)	< 0.001**	6.763	0.562
Model 5b	BIA indexes + AMC	0.767(0.726–0.809)	< 0.001**	14.638	0.067
Model 6a	nPCR	0.724(0.678–0.771)	< 0.001**	45.852	< 0.001
Model 6b	BIA indexes + nPCR	0.844(0.806–0.881)	< 0.001**	25.438	0.001

BIA indexes: Water ratio, VFA, BCM and phase angle. ISRNM indicators: albumin, prealbumin, cholesterol, AMC and nPCR. Model a: models including one single ISRNM indicator. Model b: models including BIA indexes and one single ISRNM indicator. BIA, bioelectrical impedance analysis; ISRNM, International Society of Renal Nutrition and Metabolism; BMI, body mass index; AMC, arm muscle circumference; nPCR, normalized protein catabolic rate. *: p < 0.05; **: p < 0.01

ISSN: 1475-2891