Long-term follow-up in patients with and without disk disease as a function of treatment type
| Treatment Group | Outcome | |||
|---|---|---|---|---|
| Excellent | Good | Poor | Total | |
| Patients with disk disease | ||||
| O2–O3 | 64 | 9 | 13 | 86 |
| Steroid | 46 | 16 | 18 | 80 |
| Total | 110 | 25 | 31 | 166 χ2 = 5.51 |
| Patients without disk disease | ||||
| O2–O3 | 53 | 11 | 6 | 70 |
| Steroid | 44 | 11 | 15 | 70 |
| Total | 97 | 22 | 21 | 140 χ2 = 4.68 |