The Association of Sleep Quality and Vitamin D Levels in Hemodialysis Patients

Table 1

Baseline and clinical characteristics between good and poor sleepers.

Characteristics	Good sleepers	Poor sleepers	value
Numbers (%)	29 (36.30%)	51 (63.7%)	0.294^a
Age (years old)			0.567
Gender
Men	21 (72.4%)	31 (60.8%)	0.211^a
Women	8 (27.6%)	20 (39.2%)
Weight (kg)			0.489
Hemoglobin (g/dl)			0.406
Vitamin D (ng/ml)			0.101
Calcium (mg/dl)			0.530
Phosphate (mg/dl)			0.135
			0.121
PTH (pg/ml)	337 (54–932)	367 (72–1298)	0.430^b
Duration of HD (months)	5.50 (0–15)	4 (1–20)	0.560^b
Mode of HD
AV fistula	18 (62.1%)	35 (68.6%)	0.332^a
CVC	10 (34.5%)	16 (31.4%)
AV graft	1 (3.4%)	0 (0.0%)
Causes of ESRD
ADPKD	1 (3.4%)	1 (2.0%)	0.091^a
CIN	3 (10.3%)	0 (0.0%)
DM	0 (0.0%)	2 (6.9%)
HTN	16 (55.2%)	30 (58.8%)
HTN+DM	9 (31.0%)	18 (35.3%)

Abbreviations: ADPKD: autosomal dominant polycystic kidney disease; AV fistula: arteriovenous fistula; AV graft: arteriovenous graft; CIN: chronic interstitial nephritis; CVC: central venous catheter; DM: diabetes mellitus; ESRD: end-stage renal disease; HD: hemodialysis; HTN: hypertension; PTH: parathyroid hormone. The quantity data are expressed as . ^aNumbers (%), chi-square test. ^bMedian (min–max), Mann–Whitney test.