Table 1.
Preoperative variables.
| Variables | Aggregate data | Centre-level data | |||||
|---|---|---|---|---|---|---|---|
| Mean (SD) | Median (IQR) | Rate (%) | #centres | Median | IQR | Range | |
| Age at Stage II (days) | 163.1 (57.4) | 157 (128, 188) | 14 | 162.25 | 146.8 ~ 170.1 | 120 ~ 197 | |
| BDG weight (kg) | 5.8 (1) | 5.7 (5.1, 6.4) | 14 | 5.69 | 5.462 ~ 6.05 | 5.1 ~ 6.65 | |
| BDG weight z-score | −1.8 (1.2) | −1.8 (−2.7, −1) | 14 | −1.7325 | −1.99 ~ −1.514 | −2.2 ~ −0.88 | |
| Reason for timing | |||||||
| Elective | 65.5 | 14 | 69.7% | 56.7 ~ 82.6% | 23.1 ~ 100% | ||
| Progressive hypoxaemia | 36.8 | 14 | 45.75%% | 21 ~ 50% | 15.8 ~ 76.9% | ||
| Failure to thrive | 3.8 | 8 | 4.8% | 2.3 ~ 7.5% | 1.2 ~ 12.8% | ||
| Shunt occlusion | 1.5 | 6 | 3.4% | 2.4 ~ 4.2% | 2 ~ 4.8% | ||
| Neoaortic arch obstruction | 4.0 | 8 | 7.4% | 5 ~ 8.5% | 1.2 ~ 14.3% | ||
| AW insufficiency | 3.8 | 8 | 6.6% | 3.8 ~ 10.25% | 2.3 ~ 16.7% | ||
| Ventricular dysfunction | 9.6 | 10 | 11.0% | 7.9 ~ 15.6% | 7.1 ~ 16.7% | ||
| Other | 7.1 | 8 | 7.7% | 6.5 ~ 12.7% | 2 ~ 20.5% | ||
| Associated anatomic diagnoses | 44.1 | 14 | 48.4% | 28.8 ~ 63.5% | 25 ~ 83.3% | ||
| Pre-Stage II catheter | 96.9 | 14 | 100.0% | 98.5 ~ 100% | 89.7 ~ 100% | ||
| Catheter intervention (N = 123) | 31.0 | 14 | 31.6% | 22.1 ~ 37.55% | 5.9 ~ 83.3% | ||
| Catheter intervention type | |||||||
| Balloon angioplasty | 21.2 | 13 | 25.0% | 15.8 ~ 28.6% | 2 ~ 83.3% | ||
| Balloon valvuloplasty | 0.5 | 1 | 4.5% | 4.5 ~ 4.5% | 4.5 ~ 4.5% | ||
| Balloon septostomy | 1.5 | 4 | 5.1% | 4.7 ~ 5.7% | 4.2 ~ 6.8% | ||
| Blade septostomy | 0.3 | 1 | 1.2% | 1.2 ~ 1.2% | 1.2 ~ 1.2% | ||
| Radiofrequency ablation | 0.3 | 1 | 1.2% | 1.2 ~ 1.2% | 1.2 ~ 1.2% | ||
| Stent | 4.0 | 6 | 8.4% | 4.9 ~ 21.6% | 3.9 ~ 33.3% | ||
| Coiling of collaterals | 8.1 | 6 | 5.2% | 4.9 ~ 23.2% | 2.4 ~ 43.2% | ||
| Other | 0.8 | 3 | 2.6% | 2.5 ~ 3.4% | 2.3 ~ 4.2% | ||
| Remain hospitalised inter-stage | 2.0 | 6 | 6.2% | 4.9 ~ 11.2% | 1.2 ~ 12.5% | ||
| Method of feeding | |||||||
| Oral | 78.3 | 14 | 80.8% | 67.7 ~ 84.0% | 62.5 ~ 95.5% | ||
| NG | 17.1 | 12 | 16.7% | 11.8 ~ 23.4% | 9.1 ~ 35.3% | ||
| NJ | 0.3 | 1 | 1.2% | 1.2 ~ 1.2% | 1.2 ~ 1.2% | ||
| G | 17.9 | 12 | 19.9% | 13.3 ~ 32.5% | 3.9 ~ 50% | ||
| GJ | 2.8 | 5 | 5.3% | 4.8 ~ 7.3% | 2 ~ 12.5% | ||
| Other | 1.3 | 4 | 3.1% | 2.0 ~ 6.1% | 1.2 ~ 12.5% | ||
| Digoxin use | 26.2 | 11 | 25.0% | 22.6 ~ 31.3% | 12.5 ~ 50% | ||
AVV = atrioventricular valve; BDG = bidirectional glenn; G = gastrostomy tube; GJ = gastrojejunostomy tube; IQR = interquartile range; NG = nasogastric tube; NJ = nasojejunostomy tube.