Baseline and follow-up surveys consisted of the 20-Item Sino-Nasal Outcome Test (SNOT-20)7 measure of symptom severity, a global question regarding symptom frequency, and a medication diary. The SNOT-20 is a validated, self-administered, quality of life instrument specific for patients with symptoms of rhinosinusitis. The instrument measures physical problems, functional limitations, and emotional consequences of sinusitis by asking subjects to score 20 items, including the need to blow the nose, sneezing, runny nose, cough, postnasal discharge, thick nasal discharge, ear fullness, dizziness, ear pain, facial pain/pressure, difficulty falling asleep, waking up at night, lack of a good night's sleep, waking up tired, fatigue, reduced productivity, reduced concentration, frustrated/restless/irritable, and being sad and embarrassed. The SNOT-20 gives a summary measure that is usually scored from 0 to 5. For ease of interpretation, we have used a multiple of 20, giving a summary score ranging from 0 to 100, with 100 indicating worse symptoms.