Foods contributing to nutrients intake and assessment of nutritional status in pre-dialysis patients: a cross-sectional study

Table 8 Bioelectrical impedance analysis (BIA) measurement, subjective global assessment (SGA) and serum albumin levels of the all subjects according to tertiles of protein intake

Parameters	Tertiles of protein intake (n = 256)¹			P value^3,6
Parameters	Tertile 1 (n = 85)	Tertile 2 (n = 86)	Tertile 3 (n = 85)	P value^3,6
Bioelectrical impedance analysis
Phase angle, PhA (degrees)	5.1 ± 0.7^{b 2}	5.3 ± 0.7^b	5.6 ± 0.8^a	< 0.001
Body cell mass, BCM (kg)	29.3 ± 7.0^b	30.9 ± 5.7^ab	32.8 ± 5.5^a	< 0.01
Intracellular water, ICW (L)	20.4 ± 4.9^b	21.6 ± 4.0^ab	22.9 ± 3.8^a	< 0.01
Extracellular water, ECW (L)	13.0 ± 3.0^b	13.6 ± 2.4^ab	14.1 ± 2.7^a	0.02
Total body water, TBW (L)	33.4 ± 7.9^b	34.6 ± 7.8^ab	37.1 ± 6.1^a	< 0.01
Extracellular fluid, ECF (ECW/TBW)	0.39 ± 0.01^a	0.39 ± 0.01^ab	0.38 ± 0.01^b	< 0.001
Bone mineral content, BMC (kg)	2.5 ± 0.6^b	2.6 ± 0.4^ab	2.8 ± 0.4^a	< 0.01
Subjective global assessment
SGA score	6.3 ± 0.9^b	6.5 ± 0.7^a	6.6 ± 0.7^a	0.04
Malnutrition, n (%) ⁵	18 (21.2)⁴	7 (8.1)	6 (7.1)	< 0.01
Biochemical data
Serum albumin (g/dL)	4.1 ± 0.3^b	4.2 ± 0.3^ab	4.3 ± 0.3^a	< 0.01

¹ The subjects were classified into 3 groups according to tertiles of protein intake in all subjects
² The data are presented as means ± standard deviations
³ One-way ANOVA was performed to compare parameters according to tertiles of protein intake. Means with different letters indicate significant differences (P < 0.05) by Bonferroni multiple comparison test
⁴ The data are presented as number (percentage)
⁵ Malnourished patients were assessed using modified SGA (subjective global assessment)
⁶ Chi-square test was performed to compare the categorical parameters (malnutrition) according to tertiles of protein intake

ISSN: 1471-2369