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Table 2 Baseline characteristics and clinical features of hemodialysis patients with and without infectious spondylitis (model 2)

From: Identifying risk groups of infectious spondylitis in patients with end-stage renal disease under hemodialysis: a propensity score-matched case-control study

Variables Patients with infectious spondylitis (n = 16) Patients without infectious spondylitis (n = 64) p value
Age, mean ± SD, year 60.9 ± 12.0 61.0 ± 11.5 0.98
Male Gender, n (%) 7 (43.8%) 22 (34.4%) 0.48
Diabetes mellitus, n (%) 6 (37.5%) 22 (34.4%) 0.82
Hypertension, n (%) 8 (50%) 51 (79.7%) 0.02
Coronary artery diseases, n (%) 3 (18.8%) 9 (14.1%) 0.64
Heart failure, n (%) 1 (6.3%) 10 (15.6%) 0.33
Cerebral vascular diseases, n (%) 1 (6.3%) 6 (9.4%) 0.69
Liver cirrhosis, n (%) 2 (12.5%) 4 (6.3%) 0.40
Malignancy, n (%) 1 (6.3%) 8 (12.5%) 0.48
Immunosuppression status, n (%) 1 (6.3%) 0 (0%) 0.04
Degenerative spinal disease, n (%) 14 (87.5%) 3 (4.7%) <  0.001
History of spinal operation, n (%) 1 (6.3%) 3 (4.7%) 0.80
Primary cause of ESRD    0.73
 Chronic Glomerulonephritis 7 (43.8%) 37 (57.8%)  
 Diabetic nephropathy 6 (37.5%) 15 (23.4%)  
 Polycystic kidney disease 2 (12.5%) 9 (14.1%)  
 Malignant hypertension 1 (6.3%) 2 (3.1%)  
 Others 0 (0%) 1 (1.6%)  
HD vintage (years) 4.65 ± 4.36 5.03 ± 3.59 0.42
HD access
 Arteriovenous fistula 6 (37.5%) 53 (82.8%) < 0.001
 Arteriovenous graft 3 (18.8%) 7 (10.9%) 0.40
 Tunneled cuffed catheter 7 (43.8%) 4 (6.3%) < 0.001
Access operation within recent 6 months 10 (62.5%) 9 (14.1%) < 0.001
Laboratory data (blood sample)
 Leukocyte count, 1000/μL 7.53 ± 2.2 6.57 ± 2.2 0.13
 Hemoglobin, g/dL 8.86 ± 1.3 9.82 ± 1.3 0.012
 RDW, % 16.3 ± 2.2 14.2 ± 1.4 < 0.001
 Platelet Count, 1000/μL 181 ± 76 198 ± 68 0.37
 BUN, mg/dL 68.2 ± 27.8 65.4 ± 18.7 0.62
 Creatinine, mg/dL 9.10 ± 3.15 10.1 ± 2.4 0.18
 Potassium, mEq/L 4.60 ± 0.74 4.79 ± 0.77 0.36
 Calcium, mg/dL 9.54 ± 1.08 9.81 ± 0.95 0.34
 Inorganic phosphorus, mg/dL 4.98 ± 1.99 5.07 ± 1.52 0.84
 ALT, U/L 18.2 ± 13.2 15.3 ± 11.1 0.20
 ALP, U/L 139.9 ± 79.7 84.5 ± 45.0 0.001
 Albumin, g/dL 3.35 ± 0.65 3.97 ± 0.42 < 0.001
 Glucose AC, mg/dL 149 ± 86 124 ± 70 0.07
 hsCRP, mg/L 29.90 ± 47.02 8.18 ± 16.85 0.024
 Ferritin, ng/mL 475.7 ± 513.2 419.9 ± 485.3 0.85
  1. ESRD end stage renal disease, HD hemodialysis, RDW red blood cell volume distribution width, ALT alanine transaminase, ALP alkaline phosphatase, BUN blood urea nitrogen, AC ante cibum, hsCRP high sensitivity C- reactive protein
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