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Demographic and clinical characteristics (N = 40).
| Parameters | Two-level PELD (N = 14) | Foraminoplasty PELD (N = 26) | P value |
|---|---|---|---|
| Age (year) | 47.3 ± 13.3 | 42.4 ± 9.4 | 0.18 |
| Sex | |||
| Male | 5 | 14 | 0.33 |
| Female | 9 | 12 | |
| Conservative time (month) | 4.4 ± 1.0 | 4.5 ± 1.3 | 0.65 |
| Intraoperative duration (minute) | 80.2 ± 6.6 | 64.1 ± 7.3 | <0.01 |
| Follow-up time (month) | 18.5 ± 3.0 | 17.2 ± 2.7 | 0.15 |
| Location of lesions | |||
| L3/4 | 5 | 4 | 0.34 |
| L4/5 | 7 | 14 | |
| L5/S1 | 2 | 8 |
