Total Sample | LBP | FBS | |
---|---|---|---|
n = 36 | n = 12 | n = 24 | |
Sex (male:female) | 17:19 | 5:7 | 12:12 |
Age mean (SD) (in years) | 54.80 (10.00) | 56.33 (12.32) | 54.00 (8.75) |
Pain duration mean (SD) (in years) | 13.61 (6.77) | 8.89 (2.57) | 15.55 (7.04) |
Implant duration mean (SD) (in years) | 4.38 (3.03) | 2.18 (2.05) | 5.48 (2.85) |
Previous spinal operations median (range) | 2 (1–11) |