GERD-Q Equation:
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The GERD-Q (Gastroesophageal Reflux Disease Questionnaire) is a validated diagnostic tool for assessing GERD symptoms. It evaluates six key symptoms over the past week to help diagnose GERD and assess its severity.
The calculator uses the GERD-Q equation:
Where each symptom is scored based on frequency:
Score Interpretation:
Clinical Use: Scores ≥8 suggest GERD with 85% sensitivity and 75% specificity. Higher scores correlate with more severe symptoms.
Instructions: For each symptom, select how many days in the past week you experienced it. Be honest about medication use for most accurate results.
Q1: What's the difference between GERD-Q and other GERD assessments?
A: GERD-Q is simpler than 24-hour pH monitoring but nearly as accurate for diagnosis in most patients.
Q2: Can GERD-Q monitor treatment effectiveness?
A: Yes, repeating GERD-Q after treatment can show symptom improvement (score reduction).
Q3: What if I have a score of 4-8?
A: This "gray zone" may require additional testing or a trial of acid suppression therapy.
Q4: Does GERD-Q assess complications?
A: No, it only evaluates symptoms. Endoscopy may be needed to assess for esophagitis or Barrett's esophagus.
Q5: How often should GERD-Q be repeated?
A: For monitoring, repeat every 4-8 weeks during treatment or when symptoms change.