Table 3:

Pulmonary vein characteristics and outcome

	Over all (n=93)	CHD (n=65)	No CHD (n=28)	p-value	Premat urity (n=32)	No premat urity (n=61)	p-value
Number of pulmonary veins affected	2 (1, 2)	2 (1, 2)	2 (1, 3)	0.8	2 (1, 2)	2 (1, 2)	0.7
Bilateral disease	27 (29%)	17 (26%)	10 (35%)	0.5	11 (34%)	16 (26%)	0.5
Type of primary intervention None Surgery Balloon angioplasty Stent	28 (30%) 28 (30%) 32 (34%) 5 (6%)	19 (29%) 25 (38%) 18 (28%) 3 (5%)	9 (32%) 3 (11%) 14 (50%) 2 (7%)	0.03	9 (28%) 4 (13%) 17 (53%) 2 (6%)	19 (31%) 2 (39%) 3 (25%) 3 (5%)	0.01
Number of interventions None 1 2 or more	28 (30%) 23 (25%) 42 (45%)	19 (29%) 17 (26%) 29 (45%)	9 (32%) 6 (21%) 13 (47%)	0.9	9 (28%) 7 (22%) 16 (50%)	19 (31%) 16 (26%) 26 (43%)	0.9
Lung transplant	4 (4%)	3 (5%)	1 (4%)	1	2 (6%)	2 (3%)	0.6
Death	23 (25%)	18 (28%)	8 (29%)	1	8 (25%)	18 (30%)	0.8
Median time to transplant/death (months)	5.8 (1.1, 15.3)	15.3 (3.8, 54.7)	3.8 (0.8, 9.3)	0.053	10.1 (5.8, 18.8)	4.7 (1.6, 17.3)	0.6