Demographic variables of the study groupsa
| Variable | Prenatal Surgery (n = 66) | Postnatal Surgery (n = 63) | P Valueb |
|---|---|---|---|
| Age at follow-up (yr) | 7.5 (SD, 1.3) | 7.3 (SD, 1.2) | .460 |
| Female (No.) (%) | 29 (43.9%) | 41 (65.1%) | .022 |
| Race (No.) (%) | .334 | ||
| White | 61 (92.4%) | 55 (87.3%) | |
| African American | 1 (1.5%) | 1 (1.6%) | |
| Hispanic | 2 (3.0%) | 5 (7.9%) | |
| Other | 2 (3.0%) | 2 (3.2%) | |
| Gestational age at birth (week) | 34.4 (SD, 2.6) | 37.5 (SD, 0.8) | <.001 |
| Anatomic lesion level (No.) (%) | .563 | ||
| Thoracic | 2 (3.0%) | 1 (1.6%) | |
| L1–L2 | 9 (13.6%) | 12 (19.1%) | |
| L3–L4 | 33 (50.0%) | 29 (46.0%) | |
| L5–S2 | 22 (33.3%) | 21 (33.3%) | |
| Presence of sac on fetal imaging | 48 (72.7%) | 54 (87.1%) | .043 |
| Tethered cord release | 19 (28.8) | 8 (12.7) | .025 |