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Table 2 Comparison of risk factors for revision spinal surgery between surgical causes

From: Unplanned revision spinal surgery within a week: a retrospective analysis of surgical causes

  Screw Malposition (n = 41) Epidural Hematoma (n = 27) Inadequate Decompression (n = 37) Others (n = 11) p
Age (y) 65.51 ± 12.02 (38–93) 67.30 ± 17.61 (24–88) 54.35 ± 11.35 (30–75) * 65.91 ± 15.66 (38–83) <0.001
Interval to reoperation (d) 6.20 ± 1.40 (2–7) 2.70 ± 2.48 (0–7) * 5.27 ± 1.97 (1–7) 4.45 ± 1.81 (2–7) <0.001
Length of hospital stay (d) 15.76 ± 7.65 (7–55) 23.11 ± 16.92 (5–74) 17.00 ± 13.47 (4–55) 21.73 ± 19.45 (7–60) 0.117
Number of inpatient operations 2.15 ± 0.48 (2–4) 2.30 ± 0.54 (2–4) 2.08 ± 0.60 (2–4) 2.09 ± 0.30 (2–3) 0.410
Presence of new post-operative neurological deficit 4.88 % (2) 25.93 % (7)* 2.70 % (1) 9.09 % (1) 0.013a
  1. Data are presented as mean ± standard deviation (range) by one-way ANOVA, with the exception of presence of new post-operative neurological deficit, which is presented as % (number of cases)
  2. aFisher’s exact test
  3. *p < 0.05