Table 3 Predictive factors for postoperative complications
From: Predictive factors for complications after surgical treatment for schwannomas of the extremities
Postoperative complications | P value | ||||
|---|---|---|---|---|---|
(−) | (+) | univariate | multivariate | ||
Mean age | 52.2 | 59.3 | 0.03 | 0.06 | |
Tumor size | 3.19 | 2.94 | 0.45 | ||
Duration of | ≥12 months | 51 | 21 | 0.15 | 0.25 |
symptoms | < 12 months | 41 | 28 | ||
Preoperative motor | (−) | 89 | 46 | 0.41 | |
weakness | (+) | 3 | 3 | ||
Preoperative hypesthesia | (−) | 85 | 44 | 0.67 | |
(+) | 6 | 5 | |||
Schwannomatosis | (−) | 84 | 45 | 1.0 | |
(+) | 8 | 4 | |||
Previous surgery | (−) | 90 | 48 | 1.0 | |
(+) | 2 | 1 | |||
Degenerative changes | (−) | 59 | 31 | 0.9 | |
on MR imaging | (+) | 32 | 17 | ||
Tourniquet | (−) | 42 | 24 | 0.25 | |
(+) | 50 | 25 | |||
Location | Upper limb | 31 | 29 | 0.003 | 0.14 |
Lower limb | 61 | 20 | |||
Proximal | 46 | 27 | 0.59 | ||
Distal | 46 | 22 | |||
Nerve | Major motor | 59 | 44 | 0.001 | 0.03 |
Others | 33 | 5 | |||