Table 2. Characteristics of the base.*.
| Age, mean (SD) y | 43.2 (8.64) |
| Gender | |
| Male | 10 (32%) |
| Female | 21 (68%) |
| Complaint | |
| Low back pain | 16 (52%) |
| Low back pain and sciatica | 15 (48%) |
| Previous episodes | |
| None | 2 (6%) |
| 1–4 | 15 (48%) |
| >4 | 14 (45%) |
| Previous treatments | |
| Yes | 25 (81%) |
| No | 6 (19%) |
| Previous spinal surgery | |
| Yes | 6 (19%) |
| No | 25 (81%) |
| VAS lumbar, mean (SD), cm | 7.26 (1.6) |
| VAS leg, mean (SD), cm | 3.16 (3.6) |
| Oswestry, mean (SD) | 40.64 (12.1) |
| Level | |
| L2-L3 | 1 (3%) |
| L3-L4 | 6 (19%) |
| L4-L5 | 13 (42%) |
| L5-S1 | 11 (35%) |
| Findings on MRI | |
| Only black disc | 13 (42%) |
| Protusion | 9 (29%) |
| Hernia | 4 (13%) |
| Hiz | 5 (16%) |
| Modic | 4 (13%) |
| Result of discography | |
| Positive | 14 (45%) |
| Negative | 17 (55%) |
*
VAS indicates visual analogue scale; MRI, magnetic resonance imaging.