Table 2.

Characteristics of infants prior to procedural PDA closure.

	All ( n = 136)	TCDC ( n = 15)	Ligation ( n = 121)	p value
Chronological age at time of closure (days), median (range)	30 (5–145)	44 (14–96)	29 (5–145)	0.007
Gestational age at time of closure (weeks), median (range)	30 (24–50)	33 (29–42)	29 (24–50)	0.001
Weight at time of closure (grams), median (range)	1055 (529–5640)	1430 (800–3690)	1005 (529–5640)	< 0.001
Medical treatment (yes), N (%)	124 (91%)	14 (93%)	110 (91%)	0.999
Invasive mechanical ventilation (yes), N (%)	83 (61%)	5 (33%)	78 (64%)	0.026
Inotropes (yes), N (%)	3 (< 1%)	0	3 (< 1%)	0.999
Feeding status prior to referral (any enteral feeds), N (%)	83 (61%)	13 (87%)	82 (68%)	0.231