Table 4.

 Radiographic features of infants hospitalized with bronchiolitis grouped according to severity (percentages are within groups)

Radiographic features	Group 0 (n = 193)	Group 1 (n = 53)	Group 2 (n = 48)	Group 3 (n = 16)	p value
Air trapping or bilateral peribronchial and perihilar infiltrates (%)	7.1	2	0	0	ns
Air trapping and bilateral peribronchial and perihilar infiltrates (%)	71.7	63.3	47.6	56.3	ns
Air trapping and multiple or dense infiltrates or lobar atelectasis (%)	21.3	34.7	52.4	43.8	ns

p between groups.