Table 6. Canonical weights and loadings for the functions (medical factors & psychosocial factors).

Variable groups	Variables	The 1st canonical function			The 2nd canonical function
		Coefficients	Correlation	Cross correlation	Coefficients	Correlation	Cross correlation
Medical factors	BMI	−0.132	0.004	0.002	−0.487	−0.506	−0.305
	HD_DUR	−0.691	−0.410	−0.283	−0.071	0.132	0.080
	CCI	−0.297	−0.373	−0.257	0.433	0.379	0.229
	Kt/V	−0.310	−0.173	−0.119	0.229	0.222	0.134
	nPCR	−0.164	0.093	0.064	−0.732	−0.410	−0.247
	Hb	0.251	0.358	0.246	0.134	0.060	0.036
	Alb	0.116	0.339	0.234	−0.032	−0.146	−0.088
	Tchol	−0.250	−0.171	−0.118	0.180	0.277	0.167
	Ca	0.222	0.177	0.122	0.011	0.041	0.025
	P	0.464	0.522	0.360	0.449	0.059	0.035
	Ferritin	0.285	0.159	0.109	−0.105	0.107	0.065
	iPTH	0.409	0.184	0.127	0.137	0.093	0.056
	25(OH)D	−0.246	0.026	0.018	−0.367	−0.427	−0.258
Psychosocial factors	HADS-A	0.427	0.278	0.191	−0.878	−0.530	−0.320
	HADS-D	−0.345	−0.207	−0.143	0.566	0.267	0.161
	MOCA	0.162	0.560	0.386	−0.287	−0.079	−0.048
	MSPSS	0.180	0.169	0.116	0.199	0.301	0.182
	ZBI	0.150	0.088	0.061	0.346	0.265	0.160
	PSQI	0.303	0.299	0.206	0.380	0.346	0.208
	age	−0.718	−0.815	−0.561	−0.422	−0.184	−0.111

25(OH)D = 25-hydroxyvitamin D, Alb = albumin, Ca = calcium, BMI = body mass index, CCI = Charlson comorbidity index, Hb = hemoglobin, HADS-A = Hospital Anxiety and Depression Scale consists of a 7-item anxiety subscale, HADS-D = Hospital Anxiety and Depression Scale consists of a 7-item depression subscale, HD_DUR = duration of dialysis, iPTH = intact parathyroid hormone, Kt/V = clearance × time/volume, MOCA = Montreal Cognitive Assessment, MSPSS = Multidimensional Scale of Perceived Social Support, nPCR = normalized protein catabolic rate, P = phosphorus, PSQI = Pittsburgh Sleep Quality Index, ZBI = Zarit Burden Interview, Tchol = total cholesterol.