The purpose of this study is to evaluate the prevalence of gastroesophageal reflux disease (GERD) symptoms in pediatric patients with cystic fibrosis using the Gastroesophageal Symptom Assessment Scale (GSAS) and the impact of stopping anti-GERD therapy on the GERD symptoms reported.
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Change from baseline in the mean GSAS score (only if GERD medication discontinued)
Timeframe: baseline and 12 weeks
Mean GSAS score in children with CF on GERD therapy
Timeframe: Baseline
Mean GSAS score in children with CF not on GERD therapy
Timeframe: Baseline