Univariate analysis of outcome dependence on preoperative and postoperative ASIA grade.
| ASIA Grade | N | Ambulatory at Discharge, n | P Value | 30-Day Mortality, n | P Value |
| Preoperative | 0.010a | <0.001a | |||
| A | 6 | 0 | 5 | ||
| B | 1 | 0 | 1 | ||
| C | 3 | 2 | 0 | ||
| D | 11 | 7 | 1 | ||
| E | 27 | 23 | 1 | ||
| Postoperative | 0.005a | <0.001a | |||
| A | 6 | 0 | 5 | ||
| B | 1 | 0 | 1 | ||
| C | 0 | 0 | 0 | ||
| D | 4 | 2 | 2 | ||
| E | 37 | 30 | 7 |
↵a Indicates significance level <0.05.
ASIA, American Spinal Injury Association.