Table 1.

Baseline characteristics of the 120 study participants

ParameterVariableMedian (IQR) or N (%)
Age, d78 (37–269)
Weight, kg5.9 (4.4–9.8)
Country of recruitmentAustralia100 (83%)
Switzerland20 (17%)
EthnicityCaucasian90 (78%)
African4 (4%)
Asian4 (4%)
Australian aboriginal6 (5%)
Pacific Islander11 (10%)
SexMale70 (58%)
Female50 (42%)
Clinical phenotypeBronchiolitis105 (88%)
Pneumonia8 (7%)
Laryngotracheobronchitis5 (4%)
Reactive airway disease2 (2%)
Virus identified in respiratory sampleRSV67 (56%)
Entero/rhinovirus31 (26%)
Adenovirus17 (14%)
Human bocavirus9 (8%)
Influenza2 (2%)
Parainfluenza6 (5%)
Human metapneumovirus3 (2%)
CoV-HKU13 (2%)
CoV-NL631 (1%)
Respiratory supportHFNC99 (83%)
CPAP or BiPAP30 (25%)
Invasive ventilation31 (26%)
HFOV6 (5%)
Length of PICU stay, d2.7 (1.6–5.0)
Expected mortalityPediatric index of mortality 2 (%)0.02 (0.01–0.7)
Observed mortalityPediatric index of mortality 2 (%)No fatal case
  • CoV-HKU1, coronavirus HkU1; CoV-NL63, coronavirus NL63.