Demographic variables, ASA grade, and number of levels fused for each study group.
| Demographics | Drain (n = 39) | No Drain (n = 42) | p-value |
|---|---|---|---|
| Age | 46.4± 9.5 | 45.1 ± 10.5 | 0.56 |
| Sex (% Female) | 53.8% | 42.8% | 0.32 |
| Height (cm) | 169.4 ± 10.8 | 169.0± 10.6 | 0.89 |
| Weight (kg) | 79.4 ± 19.5 | 80.0 ± 17.2 | 0.90 |
| BMI | 27.5 ± 4.8 | 27.5 ± 4.4 | 0.95 |
| ASA grade | 0.36 | ||
| 1 | 5.1% | 14.2% | |
| 2 | 79.5% | 69.0% | |
| 3 | 15.4% | 16.8% | |
| Number of Levels Fused: | 0.23 | ||
| One Level | 46.2% | 59.5% | |
| Two Levels | 53.8% | 40.5% |