Table 1.

Baseline characteristics of children aged < 3 years with single respiratory virus infections

	Total	RSV	HRV	FLU	Other
	N (%)	N (%)	N (%)	N (%)	N (%)
Children <3 y with single virus ARTI
Total included	144	66	49	12	17
Analysis of signs and symptoms (data available)	138	64	46	11	17
Analysis of clinical outcomes (data available)	123	53	44	11	15
Demographics (analysis of clinical outcomes)
Male	76 (62)	30 (57)	32 (73)$	4 (36)$	10 (67)
Mean age, months [range]	8 [0–35]	7 [0–35]	7 [0–24]	10 [1–26]	11 [0–33]
Median age, months [range]	4 [0–35]	3 [0–35]	4 [0–24]	9 [1–26]	8 [0–33]
Clinical history (analysis of clinical outcomes)
Prematurity at birth	11 (9)	6 (11)	3 (7)	1 (9)	1 (7)
History of BHR	12 (9)	5 (9)	5 (11)	1 (9)	1 (7)
Chronic pulmonary disorder	2 (2)	0	2 (5)	0	0
Chronic cardiovascular disorder	12 (10)	3 (6)	6 (14)	1 (9)	2 (13)
Chronic immunodeficiency disorder	5 (4)	0	2 (5)	1 (9)	2 (13)

Baseline characteristics are equally distributed, except for a male predominance with HRV vs FLU (95%CI 1.2-19)^$.