3.3 Diagnostic criteria
When diagnosing bronchiolitis, 44.01% (103/234) of participants correctly included the presence of all the following criteria: onset with rhinorrhea and/or upper respiratory tract infections; first episode of respiratory distress associated with crackles and/or wheezing, use of accessory muscles or lower chest wall retractions, low O2 saturation levels, high respiratory rate relative to age, skin colour changes, nasal flaring, fever; exposure to persons presenting with upper respiratory tract viral infections; and presentation during the epidemic season. For 5.5% (13/234) of participants, diagnostic criteria included rhinorrhea and/or upper respiratory tract infections. For 33.76% (79/234) of participants, diagnostic criteria included the first episode of respiratory distress associated with crackles and/or wheezing, use of accessory muscles or lower chest wall retractions, low O2 saturation levels, high respiratory rate relative to age, skin colour changes, nasal flaring, fever. For 6% (14/234) of participants, diagnostic criteria included exposure to persons presenting with upper respiratory tract viral infections. For 10.68% (25/234) of participants, diagnostic criteria included clinical presentation during the epidemic season.