Representation of successful Macnab outcome scores (excellent or good) by patient demographics, diagnosis and operative level. There was not a significant difference in success when stratified by gender, diagnosis or operative level. There was a significantly higher rate of surgical success in patients aged over 59 years compared to those less than 59 years old.
| Excellent/Good | Fair/Poor | |
|---|---|---|
| Overall | 6/18 (48%) | 21/5 (52%) |
| Male | 3/9 (55%) | 8/2 (43%) |
| Female | 3/9 (43%) | 13/3 (57%) |
| Age > 59 | 5/12 (59%) | 11/1 (41%) |
| Age ≤ 59 | 1/6 (33%) | 10/4 (67%) |
| Preoperative pain ≥ 8/10 | 5/7 (48%) | 10/3 (52%) |
| Preoperative pain < 5/10 | 2/4 (67%) | 3/0 (33%) |
| BMI ≥ 30 | 2/2 (24%) | 10/3 (76%) |
| BMI < 30 | 4/16 (61%) | 11/2 (39%) |
| Diagnosis: | ||
| Stenosis | 3/10 (54%) | 9/2 (46%) |
| Herniated Disc | 2/2 (80%) | 1/0 (20%) |
| Spondylolisthesis | 0/3 (33%) | 6/0 (67%) |
| Operative Level | ||
| L2-3 | 0/0 (0%) | 3/1 (100%) |
| L3-4 | 2/4 (55%) | 5/0 (45%) |
| L4-5 | 2/9 (55%) | 8/1 (45%) |
| L5-S1 | 1/3 (57%) | 3/0 (43%) |