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

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)

0.013^a