Table 1.
Univariate analysis of preoperative data for each treatment group.
| CBT group (%) |
PS group (%) |
P |
|
| Total no. of patients | 23 | 35 | — |
| Mean age | 48.5 ± 13.4 | 53.4 ± 10.85 | .70 |
| Sex | .07 | ||
| M | 16 (69.6) | 16 (46) | |
| F | 7 (30.4) | 19 (54) | |
| No. of segments operated on | .34 | ||
| 1 | 12 (52.2) | 22 (62.9) | |
| 2 | 3 (13) | 6 (17.1) | |
| 3 | 3 (13) | 5 (14.3) | |
| 4 | 5 (21.7) | 2 (5.7) | |
| Median no. segments operated on | 1 | 1 | — |
| Symptoms present | — | ||
| Back pain | 23 (100) | 35 (100) | |
| Leg pain | 15 (65.2) | 29 (82.8) | |
| Claudication | 0 | 6 (17.1) | |
| Neurologic deficit | 0 | 6 (17.1) | |
| Preoperative VAS | |||
| Back | 7.9 ± 1.7 | 8.2 ± 2.4 | .83 |
| Leg | 4.7 ± 3.0 | 6.3 ± 3.1 | .46 |
| Preoperative ODI | 52.0 ± 16.9 | 55.8 ± 16.4 | .87 |
Abbreviations: CBT, cortical bone trajectory; PS, pedicle screws; VAS, visual analog scale; ODI, Oswestry Disability Index.