Table 1.
Baseline Statistics for 635 Patients with Congenital Diaphragmatic Hernia in the CDH Study Group Registry
| Repaired on ECMO | Repaired after ECMO | total | test statistic* | |
|---|---|---|---|---|
| n | 348 | 288 | 636 | |
| Birth data | ||||
| Mean birth weight (kg) | 3.10 ± 0.52 | 3.14 ± 0.52 | 3.11 ± .052 | t = −1.05 (P=0.30, df=612) |
| Mean Apgar score at 5 minutes | 6.00 ± 2.05 | 6.20 ± 2.12 | 6.15 ± 2.09 | t = −1.17 (P=0.24, df=601) |
| Demographics | ||||
| Significant cardiac defects (%) | 15 (4.3) | 15 (5.2) | 37 (5.2) | χ2 = 0.29 (P=0.59, df=1) |
| Significant genetic abnormalities (%) | 9 (2.6) | 5 (1.7) | 14 (2.0) | χ2 = 0.52 (P=−0.47, df=1) |
| Outborn (%) | 220 (63.2) | 176 (61.3) | 443 (61.9) | χ2 = 0.24 (P=0.62, df=1) |
| Right-sided CDH (%) | 72 (20.7) | 74 (25.8) | 160 (22.4) | χ2 = 2.31 (P=0.13, df=1) |
| Agenesis of diaphragm (%) | 139 (39.9) | 99 (34.5) | 257 (35.9) | χ2 = 1.92 (P=0.16, df=1) |
| ECMO & Surgery | ||||
| Mean length of ECMO run (days) | 12.7 ± 6.5 | 8.4 ± 4.9 | 10.6 ± 6.1 | t = 9.4 (P<0.01, df=629) |
| Mean age at CDH repair (days) | 8.9 ± 5.6 | 15.3 ± 8.6 | 10.8 ± 7.9 | t = −11.0 (P<0.01, df=471) |
| Patch closure of diaphragm (%) | 287 (82.5) | 221 (77.0) | 560 (78.2) | χ2 = 2.94 (P=0.09, df=1) |
*
equal variances not assumed