Total (n = 276)	Type 1: Absent central PA (n = 45)	Type 2: incompletely arborizing PA (n = 152)	Type 3: normally arborizing PA (n = 48)	Type 4: PDA or anomalous PA (n = 31)	p value
Demographic features
Female sex	141 (51%)	22 (49%)	72 (47%)	27 (56%)	20 (65%)	0.30
Age (Months)	3.7 (1.0,6.0)	4.7 (2.5,6.4)	4.6 (1.7,6.2)	1.6 (0.1,4.1)	1.3 (0.2,4.4)	<0.001
Weight (kg)	5.2 (3.7,6.5)	5.6 (4.3,6.6)	5.3 (4.0,6.5)	4.2 (3.5,6.2)	4.8 (3.6,5.7)	0.13
PA and MAPCA measurements
Intrapericardial PA diameter (mm)	2.1 (0.8,3.2)	0 (0,0)	2.6 (1.8,3.9)	2.6 (2.1,3.2)	0.6 (0,1.4)	<0.001
Intrapericardial PA index (mm2/m2)	29 (4,64)	0 (0, 0)	40 (18,89)	44 (29,70)	4 (0,22)	<0.001
Modified Nakata (mm2/m2)	56 (16,97)	0 (0,0)	60 (27,105)	63 (43,82)	118 (72,162)	<0.001
MAPCA index (mm2/m2)	71 (33,129)	154 (119,207)	80 (49,122)	0 (0,39)	35 (20,63)	<0.001
TNPAI (mm2/m2)	148 (99,195)	154 (119, 207)	165 (111, 204)	80 (51, 116)	165 (121, 225)	<0.001
First surgery
Complete repair	182 (66%)	34 (76%)	109 (72%)	20 (42%)	19 (61%)	<0.001
Aortopulmonary window	35 (13%)	0 (0%)	10 (7%)	25 (52%)	0 (0%)
Other palliation	59 (21%)	11 (24%)	33 (22%)	3 (6%)	12 (39%)
Current status
Single-stage complete repair	182 (66%)	34 (76%)	109 (72%)	20 (42%)	19 (61%)	<0.001
Multi-stage complete repair	67 (24%)	7 (16%)	27 (18%)	25 (52%)	8 (26%)
Unrepaired	12 (4%)	1 (2%)	6 (4%)	3 (6%)	2 (6%)
Death without repair	15 (5%)	3 (7%)	10 (7%)	0 (0%)	2 (6%)
Complete repair (ever)	249 (90%)	41 (91%)	136 (89%)	45 (94%)	27 (87%)	0.76
RV:Ao at complete repair	0.33 (0.28,0.40)	0.31 (0.27,0.36)	0.33 (0.28,0.40)	0.31 (0.28,0.38)	0.34 (0.25,0.40)	0.40