Table 1:
Descriptive statistics of the study sample
| Total number of patients | 110 |
| Total number of individual LFSCs | 113 |
| Age, y | Mean, 63 (SD, 11; range, 28–87) |
| Sex, n (%) | Female, 71 (65) |
| Cyst level, n (%) | |
| L2-L3 | 6 (4.5) |
| L3-L4 | 17 (12.7) |
| L4-L5 | 89 (66.4) |
| L5-S1 | 22 (16.4) |
| Follow-up period, mo | Mean, 34 (n = 110; SD, 24.5; range, 7–93) |
| Successful rupture, n (%) | 116 (86.6) |
| Subsequent surgery, n (%) | 44 (39) |
| Time to first surgery, d | Mean 183 (SD 226, range 4–1279) |
| Repeat procedures, n (%) | |
| None | 88 (78) |
| 1 | 16 (14) |
| 2 | 6 (5) |
| ≥3 | 3 (3) |
| Total additional procedures, n | 40 |
| MRI before repeat procedure, n (%) | 21 (52) |
| Mean days to repeat procedure | 162 (median = 71, Max = 800, Min = 2) |
| Total procedures, n | 153 |
| Total procedures with prior MRI, n | 134 |