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Table 3 Postoperative complications and re-operations

From: Perioperative complications after surgical treatment in degenerative adult de novo scoliosis

  1 2 3 4 5 6 7
  Total Early complications
(< 30 d)
Late complications (> 30 d) No complications p-value (3–2) p-value (4–2) p-value (4–3)
  n = 92 % n = 23 % n = 49 % n = 20 %    
Wound healing defects 17 18.4 12 52.1 5 10.2 0 0 < 0.01 < 0.01 0.14
Wound dehiscence, delayed healing 10 10.9 6 26 4 8.2 0 0 < 0.05 < 0.05 0.18
Superficial infection 7 7.6 6 26 1 2.0 0 0 < 0.01 < 0.05 0.53
Operation due to wound healing defects 13 14.1 11 47.8 2 4.1 0 0 < 0.01 < 0.01 0.37
Postoperative Paresis 13 14.1 6 26 7 14.3 0 0 0.23 < 0.05 0.08
Epidural hematoma 6 6.5 5 21.7 1 2.0 0 0 < 0.01 < 0.05 0.53
Re-Operation 6 6.5 5 21.7 1 2.0 0 0 < 0.01 < 0.05 0.53
Dural leak 7 8.7 1 5.2 6 14.6 0 0 0.30 0.31 0.07
Re-Operation 1 1.2 1 5.2 0 0 0 0 0.14 0.31
Adjacent segment failure Total (n) 33 35.8 12 52.1 21 42.9 0 0 0.47 < 0.01 < 0.01
Adjacent segment failure during hospital stay 8 8.7 8 34.8 0 0 0 0 < 0.01 < 0.01
Re-Operation 8 8.7 8 34.8 0 0 0 0 < 0.01 < 0.01
Adjacent segment failure later on 25 27.2 4 17.4 21 42.8 0 0 < 0.01 < 0.01 < 0.01
After how many months 9.3 ± 6.3 6.7 ± 8.0 9.85 ± 6.1 0 0.19 < 0.01 < 0.01
Re-Operation 22 23.9 3 13.0 19 38.7 0 0 < 0.01 < 0.05 < 0.01
  1. Statistical analyses regarding p-values were performed between the three columns/groups, i.e. early complications (2), late complications (3) and no complications (4); see superscripted numbers (significance at p < 0.05 or at p < 0.01)