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Table 1 Characteristics of 54patients with hematogenous pyogenic spondylodiscitis

From: Comparison of gram-negative and gram-positive hematogenous pyogenic spondylodiscitis: clinical characteristics and outcomes of treatment

variable GNB (n = 17) GPC (n = 37) p
Age (yr) 65 ± 14.2 55 ± 14.5 0.014*
Male sex (No. [%]) 11 (65) 31 (84) 0.162
Follow-up (yr) 4.8 (2–6) 4.4 (2–6) 0.372
Affected level (No. [%])
 1 14 (82) 28 (76) 0.732
 2 3 (18) 9 (24)  
Location of spinal lesions (No. [%])
 Cervical spine 0 2 (5) 0.601
 Thoracic spine 2 (12) 5 (14)  
 Lumbosacral spine 15 (88) 30 (81)  
Symptoms at the initial visit (No. [%])
 Back/neck pain only 5 (30) 27 (73) 0.003*
 Constitutional symptoms only 6 (35) 2 (5)  
 Back pain with constitutional symptoms 6 (35) 8 (22)  
Duration of symptoms (day) 18 ± 21.8 37 ± 51.6 0.162
Comorbidity (No. [%])
 Diabetes mellitus 4 (24) 18 (49) 0.135
 End stage renal failure with hemodialysis 0 5 (30) 0.168
 Chronic liver disease 6 (35) 12 (32) 0.824
 Malignancy 7 (41) 1 (3) <0.001*
 Intravenous drug abuse 0 6 (16) 0.161
Neurologic symptoms (No. [%]) 12 (71) 22 (59) 0.432
 Radicular pain 9 (53) 13 (35)  
 Limb weakness 7 (41) 11 (30)  
 Cauda equina syndrome 2 (12) 3 (8)  
Type of surgery (No. [%])
 Anterior surgery 6 (35) 16 (43) 0.846
 Posterior surgery 7 (41) 7 (19)  
 Combined surgery 4 (24) 14 (38)  
Clinical outcome (No. [%])
 Delayed wound healing 1 (6) 7 (19) 0.411
 Relapse 1 (6) 10 (27) 0.143
 Death 3 (18) 5 (14) 0.7
Radiologic result (No. [%])
 Solid fusion 14 (82) 32 (86) 0.696
 Segmental instability 0 0  
  1. Data are presented as the mean ± standard deviation or frequency (%), *The difference is significant (p < 0.05), GNB gram-negative bacilli, GPC gram-positive cocci