Table 1.
Comparison of demographic data
| PE-PLIF (n = 30) | Open PLIF (n = 30) | P | |
|---|---|---|---|
| Age (years) | 51.6 ± 13.4 | 55.9 ± 14.3 | 0.232 |
| Sex ratio (male/female) | 18/12 | 18/12 | 1.000* |
| BMI | 25.5 ± 3.3 | 25.1 ± 3.5 | 0.658 |
| Smoker (yes/no) | 14/16 | 8/22 | 0.108* |
| Segment (L4-5/L5-S1) | 16/14 | 22/8 | 0.108* |
| Diagnosis | 0.156* | ||
| Spondylolisthesis | 3 | 7 | |
| Instability | 18 | 11 | |
| Collapsed disc | 9 | 12 | |
| Mean follow-up (months) | 24.7 ± 1.1 | 25.3 ± 1.5 | 0.121 |
*, results from fisher’s exact test or χ2 test. BMI Body mass index. PE-PLIF Percutaneous endoscopic posterior lumbar interbody fusion. Open PLIF Open posterior lumbar interbody fusion.