Table 1 Univariate analysis.
| Risk factor | Quantity* | Outcome 1 (ventilation time) | Outcome 2 (death) | ||
|---|---|---|---|---|---|
| Regression coefficient (95% CI) | p Value | Odds ratio (95% CI) | p Value | ||
| CHD recognition route | |||||
| B versus A | 1.51 (1.05 to 2.16) | 0.03 | 0.50 (0.23 to 1.12) | 0.09 | |
| C versus A | 1.10 (0.73 to 1.67) | 0.64 | 0.33 (0.11 to 0.94) | 0.04 | |
| B versus C | 1.37 (0.98 to 1.90) | 0.06 | 1.54 (0.59 to 4.03) | 0.38 | |
| Cardiovascular compromise | 109 (38%) | 1.79 (1.35 to 2.36) | <0.01 | 5.5 (2.54 to 11.90) | <0.01 |
| ⩾1 end organ dysfunctions | 41 (14%) | 1.39 (1.22 to 1.59) | <0.01 | 1.53 (1.16 to 2.01) | <0.01 |
| Weight (kg) | 3.2 (1–5.1) | 0.97 (0.79 to 1.18) | 0.75 | 0.77 (0.47 to 1.25) | 0.28 |
| Admit age (days) | 8.5 (0–31) | 1.03 (0.94 to 1.11) | 0.55 | 1.37 (1.13 to 1.67) | <0.01 |
| ⩾1 syndromes or associated problems | 71 (25%) | 1.23 (1.02 to 1.49) | 0.03 | 1.21 (0.79 to 1.84) | 0.38 |
| CHD type | |||||
| LHO versus PA | 89 (31%) | 1.12 (0.73 to 1.70) | 0.61 | 2.07 (0.42 to 10.21) | 0.37 |
| TGA versus PA | 77 (27%) | 1.92 (1.25 to 2.95) | <0.01 | 1.46 (0.27 to 7.85) | 0.66 |
| SV versus PA | 22 (8%) | 1.79 (0.99 to 3.25) | 0.05 | 30.33 (5.80 to 158.52) | <0.01 |
| TAPVC versus PA | 18 (6%) | 3.02 (1.59 to 5.71) | <0.01 | 6.0 (0.99 to 36.37) | 0.05 |
| Other versus PA | 36 (13%) | 1.46 (0.87 to 2.44) | 0.15 | 3.39 (0.62 to 18.62) | 0.16 |
*Data are number (%) or median (range).
CHD, congenital heart disease; LHO, left heart obstruction; PA, pulmonary atresia; route A, antenatal diagnosis; route B, diagnosis before discharge from the maternity unit; route C, diagnosis after discharge to home; SV, single ventricle with arch obstruction; TAPVC, total anomalous pulmonary venous connection; TGA, transposition of the great arteries.