Baseline and Operative Characteristics
| All patients | Single Level | Multiple Levels | |
|---|---|---|---|
|
Gender: Female Male | 48 (58%) 35 (42%) | 31 (63%) 18 (37%) | 17 (50%) 17 (50%) |
| Age in years (Mean ± SD) | 42.1 ± 8.2 | 43.6 ± 7.5 | 40.1 ± 8.8 |
| Height in cm (Mean ± SD) | 172.0 ± 9.6 | 171.0 ± 9.4 | 173.3 ± 9.9 |
| Weight in kg (Mean ± SD) | 76.5 ± 17.4 | 76.2 ± 17.7 | 77.0 ± 17.1 |
| BMI (Mean ± SD) | 25.7 ± 4.5 | 25.9 ± 4..6 | 25.4 ± 4.4 |
| Surgery Time in min (Mean ± SD) | 79.4 ± 30.6 | 127.5 ± 52.9 | |
| Blood loss (cc) (Mean) | 180.3 | 359.4 | |
| Mean Hospital Stay in days (Mean) | 5.7 | 6.4 (6.0) |
Note: Age, height, weight, BMI and surgery time were available for 98% of patients. Blood loss and hospital stay were available for 89% of patients.