Table 2. Intraoperative variables and complications.
| Variables | Alcohol-Use (n=317) | No-Alcohol (n=693) | P value |
|---|---|---|---|
| Median # of levels [IQR] | 4 [3–7] | 5 [3–7] | 0.07 |
| SSEP (%) | 8.8 | 10.4 | 0.44 |
| TcMEP (%) | 7.3 | 6.9 | 0.85 |
| EMG (%) | 14.8 | 12.7 | 0.36 |
| Operative time (mins) | 276.5±139.9 | 279.4±136.4 | 0.77 |
| EBL (mL) | 748.3±976.8 | 924.1±1203.2 | 0.02 |
| # of PRBC transfusions (1 unit = 350 mL) | 0.6±1.2 | 0.9±1.7 | 0.004 |
| UOP (mL) | 721.7±663.2 | 751.5±706.3 | 0.53 |
| Durotomy (%) | 4.7 | 6.5 | 0.27 |
IQR, interquartile range; SSEP, somatosensory evoked potentials; TcMEP, transcranial motor evoked potentials; EMG, electromyography; EBL, estimated blood loss; PRBC, packed red blood cells; UOP, urinary output.