Table 2.
Role of duration of symptoms and age in surgical outcome of ACDF.
| Index | Number | Preoperative | Improvement in last followup | ||
|---|---|---|---|---|---|
| NDI† | VAS‡ | ΔNDI | ΔVAS | ||
| Duration of symptoms | |||||
| <6 months | 48 | 21.8 ± 6.9 | 7.0 ± 1.8 | 13.0 ± 5.3 | 4.2 ± 2.0 |
| >6 months | 20 | 23.2 ± 4.2 | 6.2 ± 1.4 | 14.6 ± 9.6 | 2.7 ± 3.1 |
| P value | — | 0.536 | 0.110 | 0.865 | 0.101 |
| Patients' age | |||||
| <45 years old | 32 | 19.5 ± 5.2 | 6.0 ± 1.8 | 10.1 ± 9.5 | 3.1 ± 2.7 |
| >45 years old | 36 | 24.6 ± 6.1 | 7.4 ± 1.3 | 15.8 ± 4.6 | 4.3 ± 2.0 |
| P value | — | 0.204 | 0.09 | 0.032∗ | 0.130 |
†NDI: Neck Disability Index.
‡VAS: Visual Analogue Scale.
∗Significant statistically.