Table 2

Comparison of demographic characteristics and clinical severity in infants with acute bronchiolitis by type of identified virus

VariableRSV (n = 60)RV (n = 16)hBoV (n = 7)RSV+hBoV (n = 15)p Value
Gender (male)37 (61.7%)7 (43.8%)3 (42.9%)8 (53.3%)NS
Age (months)2.0±1.83.1±2.44.9±3.43.5±3.10.003
Birth weight (kg)3.1±0.62.9±0.63.0±0.42.9±0.4NS
Breast feeding (months)1.4±1.62.6±2.83.2±3.21.6±1.60.04
Exposure to smoking25 (43.1%)9 (56.3%)2 (33.3%)6 (42.9%)NS
School attendance29 (50.9%)11 (68.7%)3 (50.0%)8 (54.3%)NS
Family history for asthma11 (18.6%)3 (18.8%)1 (14.3%)4 (26.7%)NS
Family history for atopy23 (38.3%)8 (50.0%)2 (28.6%)2 (13.3%)NS
Clinical severity score4.3±2.43.0±2.02.9±1.74.7±2.40.05
Radiographic findings(n = 55)(n = 15)(n = 6)(n = 13)
    Normal7 (12.5%)0 (0.0%)0 (0.0%)2 (15.4%)0.02
    Diffuse air trapping27 (48.2%)4 (26.7%)2 (33.3%)6 (46.1%)(RSV vs others)
    Patchy infiltrates22 (39.3%)11 (73.3%)4 (67.7%)5 (38.5%)
Eosinophils (n/mm3)138±168307±43689±111960±840.014
Days of hospitalisation5.3±2.44.0±1.63.9±1.16.0±3.20.05
  • Data are expressed as number of positive cases and per cent and as mean±SD.