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Validity and Reliability of the Burp Score
Jerome R Lechien1,2,3,4, Stephane Hans2, Marie Mailly2
1Department of Surgery, Faculty of Medicine, Research Institute for Language Science and Technology, University of Mons (UMons), Mons, Belgium.
Summary
The Burp Score effectively measures symptoms of retrograde cricopharyngeal dysfunction (R-CPD), showing high reliability and validity. This patient-reported outcome tool accurately tracks symptom changes after treatment.
Area of Science:
- Otolaryngology
- Gastroenterology
- Patient-Reported Outcomes
Background:
- Retrograde cricopharyngeal dysfunction (R-CPD) is a condition affecting swallowing.
- Accurate assessment tools are needed to document R-CPD symptoms and treatment efficacy.
Purpose of the Study:
- To evaluate the validity and reliability of the Burp Score, a patient-reported outcome questionnaire for R-CPD.
- To assess the Burp Score's responsiveness to treatment and establish a minimal clinically important difference (MCID).
Main Methods:
- Prospective controlled study involving 80 R-CPD patients and 34 controls.
- Assessed test-retest reliability, internal consistency (Cronbach's α), and external validity (correlation with RSS-12).
- Evaluated responsiveness to botulinum toxin injection (BTI) and determined MCID using ROC analysis.
Main Results:
- High test-retest reliability (rs=0.911) and internal consistency (α=0.870) were observed.
- Moderate but significant external validity (rs=0.533 with RSS-12) and excellent internal validity (P=.001) were found.
- The Burp Score demonstrated significant decrease post-BTI, indicating responsiveness, with an MCID of 11.0.
Conclusions:
- The Burp Score is a valid and reliable tool for documenting R-CPD symptoms.
- It effectively assesses symptom severity and frequency changes from pre- to post-treatment.
- The established MCID aids in interpreting treatment effectiveness for R-CPD.
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