Table 2 Pearson correlation between lnleptin/BMI and clinical parameters in each group.

	Controls (n = 100)		Stage 5 CKD Patients (n = 209)		No-PTX Patients Group (n = 152)		PTX Patients Group (n = 57)
	r	P	r	P	r	P	r	P
Age (years)	−0.050	0.621	0.107	0.125	0.092	0.262	0.157	0.244
Dialysis vintage (months)	NA	NA	−0.051	0.537	0.067	0.522	−0.126	0.350
Systolic BP (mmHg)	−0.130	0.198	−0.128	0.066	−0.101	0.215	−0.249	0.061
Diastolic BP (mmHg)	−0.169	0.092	−0.184	0.008	−0.140	0.085	−0.318	0.016
Hemoglobin (g/l)	−0.546	<0.001	0.117	0.091	0.172	0.034	−0.003	0.982
Hematocrit (%)	−0.530	<0.001	0.116	0.095	0.172	0.035	0.001	0.996
Glucose (mmol/l)	−0.175	0.081	0.134	0.054	0.155	0.056	0.024	0.859
Creatinine (μmol/l)	−0.477	<0.001	−0.201	0.003	−0.278	0.001	0.149	0.268
Urea (mmol/l)	−0.200	0.046	−0.167	0.016	−0.231	0.004	0.076	0.572
HDL cholesterol (mmol/l)	0.151	0.133	−0.209	0.002	−0.258	0.001	−0.090	0.507
LDL cholesterol (mmol/l)	−0.114	0.259	0.164	0.017	0.131	0.109	0.335	0.011
TC (mmol/l)	−0.073	0.470	0.115	0.098	0.113	0.167	0.118	0.383
Triglyceride (mmol/l)	−0.080	0.429	0.320	<0.001	0.308	<0.001	0.372	0.004
TC/HDL cholesterol	−0.147	0.144	0.288	<0.001	0.307	<0.001	0.223	0.096
Albumin (g/l)	−0.177	0.078	0.225	0.001	0.171	0.035	0.442	0.001
Calcium (mg/dl)	−0.001	0.990	0.231	0.001	0.255	0.002	0.323	0.014
Phosphorus (mg/dl)	0.369	<0.001	−0.006	0.927	−0.088	0.281	0.263	0.048
lnALP	0.081	0.425	−0.062	0.373	0.063	0.444	−0.287	0.031
lniPTH	0.157	0.120	−0.127	0.067	−0.143	0.079	−0.306	0.021

(a) Data were Pearson’s product moment correlation coefficient (r) and corresponding P values.
(b) BMI, body mass index; CKD, chronic kidney disease; PTX, parathyroidectomy; NA: not available; BP, blood pressure; HDL, high density lipoprotein; LDL, low density lipoprotein; TC, total cholesterol; iPTH, intact parathyroid hormone; ALP, alkaline phosphatase.

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