| AF | Z | P | Sig. | ||||
| −VE (167) | +VE (33) | ||||||
| Median | IQR | Median | IQR | ||||
| NIH at admission | 8.00 | 4.00 - 13.00 | 11.00 | 6.00 - 18.50 | 2.06 | 0.03 | S |
| NIH at follow-up | 4.00 | 2.00 - 7.00 | 6.00 | 2.00 - 14.50 | 1.32 | 0.19 | NS |