Table 1.
Patients’ demographic data
| UBE (n = 60) | OLM (n = 81) | p value | ||
|---|---|---|---|---|
| Age (years) | 46.60 ± 14.18 | 54.22 ± 20.21 | 0.121 | |
| Sex (%) | M | 37 (61.7) | 24 (29.6) | 0.072 |
| F | 23 (38.3) | 57 (70.4) | ||
| Symptom (%) | Pain only | 18 (30.0) | 25 (30.9) | 0.531 |
| Pain and weakness | 42 (70.0) | 56 (69.1) | ||
| Symptom duration (weeks) | 4.67 ± 0.72 | 4.60 ± 0.71 | 0.591 | |
| Follow-up duration (months) | 12.60 ± 1.03 | 12.84 ± 1.30 | 0.225 | |
| Disc location (%) | Central | 11 (18.3) | 18 (22.2) | 0.365 |
| Paracentral | 49 (81.7) | 63 (77.8) | ||
| Disc level (%) | L2–3 | 1 (1.7) | 4 (4.9) | 0.444 |
| L3–4 | 2 (3.3) | 4 (4.9) | ||
| L4–5 | 34 (56.7) | 36 (37.0) | ||
| L5-S1 | 23 (38.3) | 37 (45.7) | ||
UBE unilateral biportal endoscopy, OLM open lumbar microscopy