Trial Outcomes & Findings for Fall Epidemic Viral Pediatric Study (NCT NCT01192178)

Fall Epidemic Viral Pediatric Study

An asthma exacerbation was defined as deterioration of asthma that required the use of outpatient oral/parenteral corticosteroids (tablets, suspensions, or injection) or an urgent care, hospitalization, or emergency room (ER) visit due to asthma that required oral/parenteral corticosteroids. Two exacerbations (out of a total of 51) were excluded: (1) one exacerbation occurred within 7 days of the resolution of an earlier one, and, per protocol, was combined with the previous exacerbation; and (2) one exacerbation occurred post treatment.

Participants recorded their asthma symptom score over the previous 24 hours (during the day and the previous night) using the following 6-point scale: 0=No symptoms; 1=Symptoms for 1 short period; 2=Symptoms for \>=2 short periods; 3=Symptoms for most of the day/previous night that did not affect normal daily activities; 4=Symptoms for most of the day/previous night that affected normal daily activities; 5=Symptoms so severe that participant could not perform normal daily activities. The Baseline mean asthma symptom score was calculated as the average score over 7 days prior to Week 1, Visit 2.

A worsening asthma day is one on which any of the following occurred: rescue albuterol use above baseline, use of oral/parenteral corticosteroids for asthma, use of asthma medication other than study medication, asthma symptom scores \>=3, nighttime awakenings, unscheduled health care visits, or missed school due to asthma. The duration of worsening asthma is the number of consecutive worsening asthma days after the date of a URTS score of 2 (moderate) or 3 (severe) or collection of a mucus sample containing RV (whichever occurred first). Each span of consecutive days is a participant interval.

Each participant (with assistance from the parent/legal guardian as needed) was instructed to keep an electronic diary (eDiary) with record of daily URTS symptoms that included: runny nose, sneezing, nasal congestion, and sore throat. Based on the best-described aggregate URTS during the previous 24 hours, participants rated symptoms as: 0 = Not present; 1 = Mild, clearly present; 2 = Moderately severe, uncomfortable; and 3 = Severe, interfering with sleep or activity. Mucus samples were collected and analyzed for RVwhen the eDiary alerted for moderate/severe URTS.

An asthma-control day was defined as a day without any of the following: rescue albuterol use, use of oral/parenteral corticosteroids for asthma, use of asthma medication other than double-blind study treatment, asthma symptom score \>0, nighttime awakenings due to asthma, unscheduled health care visits (defined as home visits, office visits, or urgent care visits), ER visits, hospitalizations for asthma, or school absenteeism due to asthma. The percentage of asthma-control days = the number (No.) of asthma-control days divided by the No. of days of treatment exposure, multiplied by 100.

An EF day was defined as a day without any of the following: rescue albuterol use, use of oral/parenteral corticosteroids for asthma, use of asthma medication other than study treatment, asthma symptom score \>0, nighttime awakenings due to asthma, unscheduled health care visits (defined as home visits, office visits, or urgent care visits), ER visits, hospitalizations for asthma, school absenteeism due to asthma, or morning peak expiratory flow (measure of maximum airflow) \<80% of baseline. Percentage of EF days=No. of EF days divided by No. of days of treatment exposure, multiplied by 100.

A symptom-free day was defined as a day during the Peak Viral Period on which the asthma symptom score was zero. The daily asthma symptom score (measured during the day and the previous night) was reported on a 6-point scale (ranging from 0=no symptoms to 5=severe symptoms). Percentage of symptom-free days was defined as the number of days during the Peak Viral Period on which the asthma symptom score=0, divided by the number of days in that same period on which non-missing values were recorded, multiplied by 100.

A rescue-free day was defined as a day during the Peak Viral Period on which no puffs of rescue medication were recorded. Percentage of rescue-free days was defined as the number of days during the Peak Viral Period on which no puffs of rescue medication were recorded, divided by the number of days in that same period on which non-missing values were recorded, multiplied by 100.