Table 2.

Reasons for exclusion of children hospitalized with RSV bronchiolitis.

Reason for exclusion	Number of children
Prior wheeze, bronchiolitis or asthma diagnosis	298
Significant other medical history or use of daily medications	258
Parents were not available for approach or refused participation	228
Prematurity (gestational age < 36 weeks)	200
Met other exclusion criteria*	169
Duration of respiratory symptoms longer than 5 days at the time of admission (or 7 days at randomization), or on mechanical ventilation at the time of screening	157
Did not meet protocol definition of bronchiolitis	53

This table summarizes the reasons for exclusion of children aged 1–18 months that were hospitalized at St. Louis Children's Hospital due to RSV Bronchiolitis. Some children had more than one reason for exclusion.

* These include: Significant developmental delay, current use of macrolide or medication that may prolong QT interval, contraindication for azithromycin use, participation in another clinical trial or sibling enrolled in the clinical trial during the same RSV season, family is living out of the St. Louis metro area.