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Updated: Jun 20, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
The relationship between the prevalence of nighttime gastroesophageal reflux disease and disease severity
Bonnie B Dean1, Daniel Aguilar, Lawrence F Johnson
1Cerner LifeSciences, 9100 Wilshire Blvd., Suite 655 East Tower, Beverly Hills, CA, 90212, USA. bdean@cerner.com
Background:
Nighttime gastrointestinal reflux disease (GERD) prevalence and severity estimates vary substantially across studies.
Methods:
We assessed nighttime GERD (NTG) prevalence and symptom frequency and severity through a web survey of US adults, using the GERD Symptom and Medication Questionnaire (GERD-SMQ), a validated symptom questionnaire. NTG was based on episodes of nighttime heartburn per week and time of occurrence. Symptom severity and impact were assessed and compared for GERD cases with and without NTG.
Results:
GERD prevalence among respondents (n = 2,603) was 27%. Forty-five percent of symptomatic GERD respondents had NTG. Among respondents with both daytime and nighttime symptoms, 51% reported that nighttime symptoms were more bothersome. NTG respondents reported greater disease severity compared with those without (P < 0.0001).
Conclusions:
NTG symptoms are very common among those identified with GERD. People with nighttime symptoms have greater disease severity than those with exclusively or primarily daytime symptoms.
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