Table 1. Description of infants with a first episode of RSV associated pneumonia, by age group.

	<2 months (N = 26)	2–11 months (N = 171)	≥12 months (N = 101)
Sex
Male (%)	15 (57.7)	90 (52.6)	42 (41.6)
Female (%)	11 (42.3)	81 (47.4)	59 (58.4)
Birth weight (kg)
Median (IQR)	3.085	2.865	2.910
	(2.750–3.160)	(2.580–3.195)	(2.650–3.130)
Low birth weight (%)	3/26 (11.5)	31/168 (18.5)	15/101 (14.9)
Gestation (weeks)
Median (IQR)	39.1	39.1	39.4
	(38.2–40.3)	(38.1–39.6)	(38.3–40.0)
Premature (%)	1/26 (3.9)	16/169 (9.5)	4/101 (4.0)
Season of birth				Total
Hot (%)	0 (0.0)	51 (29.8)	19 (18.1)	70 (23.5)
Wet (%)	26 (100.0)	46 (26.9)	57 (56.4)	129 (43.3)
Cool (%)	0 (0.0)	57 (56.4)	25 (24.8)	99 (33.2)
Clinical disease
Pneumonia (%)	2 (7.7)	113 (66.1)	79 (78.2)	194 (65.1)
Severe pneumonia (%)	12 (46.2)	42 (24.6)	13 (12.9)	67 (22.5)
Very severe pneumonia (%)	12 (46.2)	16 (9.4)	9 (8.9)	37 (12.4)
CXR
Normal (%)	5 (25.0)	12 (7.9)	1 (1.0)	18 (6.7)
Other infiltrate (%)	14 (70.0)	97 (63.8)	61 (62.2)	172 (63.7)
Primary endpoint pneumonia (%)	1 (5.0)	43 (28.3)	36 (36.7)	80 (29.6)