Anterior lumbar interbody fusion subgroup patient characteristics.
| Characteristic | Transversus Abdominis Plane (n = 17) | Control (n = 20) | P Value |
| Age, y | 54.8 ± 13.6 | 59.7 ± 12.1 | 0.258 |
| Body mass index | 27.5 ± 4.0 | 29.2 ± 4.8 | 0.303 |
| Sex | |||
| Men | 5 (29.4%) | 12 (60.0%) | 0.063 |
| Women | 12 (70.6%) | 8 (40.0%) | |
| Tobacco history | 6 (35.5%) | 9 (45.0%) | 0.549 |
| Drug abuse history | 1 (5.9%) | 3 (15.0%) | 0.609 |
| Previous pain management | 9 (52.9%) | 10 (50.0%) | 0.858 |
| No. of levels (rows) | 1.0 (1.0–2.0) | 1.0 (1.0–1.0) | 0.052 |
Note: Data presented as mean ± SD, n (%), or median (interquartile range).