. 2018 Mar 13;33(14):e111. doi: 10.3346/jkms.2018.33.e111

Table 2. Results of the correlation analysis.

Variables	DOM1	DOM2	DOM3	DOM4	HADS-A	HADS-D	MOCA	MSPSS	ZBI	PSQI	Age
BMI	0.185	0.181	0.027	0.12	0.151	−0.119	−0.006	0.113	−0.1	−0.117	0.091
BMI	(0.067)	(0.074)	(0.794)	(0.237)	(0.134)	(0.237)	(0.95)	(0.264)	(0.327)	(0.247)	(0.368)
HD_DUR	−0.198	−0.222^a	−0.092	−0.16	−0.029	0.207^a	−0.209^a	−0.039	−0.137	−0.017	0.172
HD_DUR	(0.05)	(0.027)	(0.364)	(0.114)	(0.777)	(0.039)	(0.037)	(0.701)	(0.176)	(0.87)	(0.086)
CCI	−0.088	−0.033	−0.101	0.066	−0.234^a	0.062	−0.061	0.074	0.036	0.083	0.254^a
CCI	(0.388)	(0.745)	(0.319)	(0.515)	(0.019)	(0.541)	(0.545)	(0.462)	(0.721)	(0.409)	(0.011)
Kt/V	−0.036	−0.026	0.191	0.117	−0.122	−0.009	−0.185	−0.001	−0.103	0.138	0.094
Kt/V	(0.731)	(0.803)	(0.064)	(0.259)	(0.235)	(0.934)	(0.071)	(0.994)	(0.321)	(0.179)	(0.365)
nPCR	0.235^a	0.167	0.162	0.239^a	0.031	−0.221^a	0.12	−0.064	−0.134	0.038	0.041
nPCR	(0.022)	(0.105)	(0.116)	(0.02)	(0.764)	(0.03)	(0.244)	(0.535)	(0.195)	(0.712)	(0.694)
Hb	0.064	0.152	0.121	0.079	0.09	−0.067	0.051	0.051	0.154	0.135	−0.122
Hb	(0.527)	(0.134)	(0.233)	(0.438)	(0.371)	(0.508)	(0.617)	(0.616)	(0.128)	(0.182)	(0.225)
Alb	0.122	0.011	0.161	0.058	0.111	−0.038	0.012	0.03	−0.212^a	0.064	−0.229^a
Alb	(0.228)	(0.915)	(0.111)	(0.567)	(0.27)	(0.705)	(0.908)	(0.771)	(0.035)	(0.526)	(0.022)
Tchol	0.073	−0.002	0.052	−0.012	−0.201^a	−0.078	−0.181	−0.023	0.065	−0.07	0.002
Tchol	(0.47)	(0.986)	(0.609)	(0.908)	(0.044)	(0.44)	(0.072)	(0.82)	(0.52)	(0.49)	(0.983)
Ca	−0.104	−0.012	−0.051	−0.054	0.127	0.092	−0.029	0.023	−0.069	0.202^a	−0.07
Ca	(0.305)	(0.907)	(0.616)	(0.593)	(0.208)	(0.362)	(0.775)	(0.82)	(0.495)	(0.044)	(0.486)
P	0.202^a	0.139	0.236^a	0.096	0.04	−0.062	0.261^b	0.07	−0.107	0.207^a	−0.255^a
P	(0.045)	(0.17)	(0.019)	(0.345)	(0.693)	(0.539)	(0.009)	(0.487)	(0.293)	(0.038)	(0.01)
Ferritin	0.03	−0.065	−0.075	−0.026	−0.007	0.046	0.055	−0.129	−0.047	−0.025	−0.195
Ferritin	(0.767)	(0.521)	(0.461)	(0.795)	(0.943)	(0.653)	(0.587)	(0.199)	(0.641)	(0.803)	(0.052)
iPTH	0.169	0.103	0.224^a	0.052	0.005	−0.081	−0.073	0.154	−0.09	0.132	−0.065
iPTH	(0.095)	(0.312)	(0.026)	(0.609)	(0.959)	(0.423)	(0.472)	(0.126)	(0.373)	(0.19)	(0.522)
25(OH)D	0.059	0.019	0.023	0.034	0.204^a	0.006	−0.011	−0.139	−0.135	0.034	0.046
25(OH)D	(0.564)	(0.854)	(0.822)	(0.737)	(0.042)	(0.955)	(0.912)	(0.168)	(0.183)	(0.74)	(0.647)
DOM1					−0.263^b	−0.464^b	0.25^a	0.287^b	−0.15	−0.259^b	−0.161
DOM1					(0.008)	(0)	(0.012)	(0.004)	(0.138)	(0.009)	(0.108)
DOM2					−0.381^b	−0.556^b	0.158	0.413^b	−0.048	−0.095	−0.065
DOM2					(0)	(0)	(0.114)	(0)	(0.636)	(0.342)	(0.52)
DOM3					−0.292^b	−0.381^b	0.057	0.397^b	−0.107	−0.029	−0.09
DOM3					(0.003)	(0)	(0.569)	(0)	(0.291)	(0.771)	(0.368)
DOM4					−0.215^a	−0.39^b	0.197^a	0.312^b	−0.104	−0.212^a	−0.032
DOM4					(0.031)	(0)	(0.048)	(0.002)	(0.302)	(0.034)	(0.754)

Values are presented by correlation coefficient (P value).

25(OH)D = 25-hydroxyvitamin D, Alb = albumin, Ca = calcium, BMI = body mass index, CCI = Charlson comorbidity index, DOM1 = physical health domain of WHOQOL-BREF, DOM2 = psychosocial domain of WHOQOL-BREF, DOM3 = social relationships domain of WHOQOL-BREF, DOM4 = environmental domain of WHOQOL-BREF, Hb = hemoglobin, HADS = Hospital Anxiety and Depression Scale, 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, WHOQOL-BREF = World Health Organization Quality of Life Scale-Abbreviated Version, ZBI = Zarit Burden Interview, Tchol = total cholesterol.

^aP < 0.05; ^bP < 0.01.