Table 2.

Respiratory infections and re-hospitalization in the BPD and non-BPD groups.

Frequency (time)	BPD (n = 30)	Non-BPD (n = 30)	U	P
Up res infection	4.00 (3.75, 5.00)	2.50 (2.00, 3.00)	73.50	<0.001
Pneumonia	2.00 (1.75, 2.25)	1.00 (0.00, 1.00)	78.00	<0.001
Wheezing	2.00 (2.00, 3.00)	0.50 (0.00, 1.00)	60.00	<0.001
Re-hosp	1.50 (1.00, 2.00)	0.00 (0.00, 1.00)	60.00	<0.001

BPD, bronchopulmonary dysplasia; Up res infection, upper respiratory tract infection; Re-hosp, re-hospitalization.