Randomized trial evaluates the reliability and validity of the Kazakh version of GERD-HRQL questionnaire in GERD patients, suggesting it is suitable for clinical use.
Key Points
This research aims to adapt the GERD-HRQL questionnaire into Kazakh and assess its validity and reliability for clinical use.
Adaptation included forward and backward translation, expert evaluation, and cognitive debriefing.
Statistical tests assessed the questionnaire's reliability using test-retest and Cronbach's alpha coefficient.
Participants were patients with GERD symptoms without alarm signs.
The Kazakh version showed high internal consistency with α = 0.951.
Reproducibility upon retesting was confirmed (r = 0.898).
Both content and face validity were supported by feedback from patients and healthcare professionals.