Table 2.
Univariate analysis between the recovery rate and clinical features using Spearman’s rank correlation test.
| Descriptive statistics | rS value | P value | |
|---|---|---|---|
| Age (year) | 52.9±10.4 | −0.529 | <0.001 |
| Duration of symptoms (months) | 10.7±4.3 | −0.690 | <0.001 |
| Compression ratio (%) | 34.8±7.6 | 0.099 | 0.370 |
| Preoperative JOA score | 10.1±2.3 | 0.444 | <0.001 |
| Surgical approach (number) | 56/21/7 | −0.159 | 0.148 |
| Quality of ISI (number) | 30/32/22 | −0.637 | <0.001 |
| Longitudinal extent of ISI (number) | 30/30/24 | −0.683 | <0.001 |
| Combined classification of ISI (number) | 30/19/11/13/11 | −0.714 | <0.001 |