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Table 2 The perioperative characteristics between two groups

From: Comparison between repeat anterior and posterior decompression and fusion in the treatment of two-level symptomatic adjacent segment disease after anterior cervical arthrodesis

Variables ACDF group PDF group p values
No. of patients 18 14  
Age (years) 52.6 ± 7.5 58.5 ± 7.4 0.034
Gender    
  Male 10 (55.6%) 9 (64.3%) 0.725
  Female 8 (44.4%) 5 (35.7%)  
Time from primary arthrodesis (years) 6.2 ± 2.4 6.8 ± 2.7 0.498
Surgery time (min) 117 ± 21 176 ± 28 < 0.001
Blood loss (ml) 186 ± 57 498 ± 176 < 0.001
Hospital stays (days) 8.6 ± 2.2 11.1 ± 2.0 0.002
Follow-up (months) 33.8 ± 6.9 36.1 ± 6.8 0.368
Symptoms before revision    
  Myelopathy 3 (16.7%) 8 (57.1%) 0.012
  Radiculopathy 11(61.1%) 2 (14.3%) 0.027
  Myeloradiculopathy 4 (22.2%) 4 (28.6%) 0.703