The Validity and Reliability Test of the Indonesian Version of Gastroesophageal Reflux Disease Quality of Life (GERD-QOL) Questionnaire
Abstract: to obtain a valid
and reliable GERD-QOL questionnaire for Indonesian application. Methods: at the
initial stage, the GERD-QOL questionnaire was first translated into Indonesian
language and the translated questionnaire was subsequently translated back into
the original language (back-to-back translation). The results were evaluated by
the researcher team and therefore, an Indonesian version of GERD-QOL questionnaire
was developed. Ninety-one patients who had been clinically diagnosed with GERD
based on the Montreal criteria were interviewed using the Indonesian version of
GERD-QOL questionnaire and the SF 36 questionnaire. The validity was evaluated
using a method of construct validity and external validity, and reliability can
be tested by the method of internal consistency and test retest. Results: the
Indonesian version of GERD-QOL questionnaire had a good internal consistency
reliability with a Cronbach Alpha of 0.687–0.842 and a good test retest
reliability with an intra-class correlation coefficient of 0.756-0.936;
p<0.05). The questionnaire had also been demonstrated to have a good
validity with a proven high correlation to each question of SF-36 (p<0.05).
Conclusion: the Indonesian version of GERD-QOL questionnaire has been proven
valid and reliable to evaluate the quality of life of GERD patients.
Keywords: GERD; quality of
life; GERD-QOL; validity; reliability
Author: Laura A Siahaan, Ari F
Syam, Marcellus Simadibrata, Siti Setiati
Journal Code: jpkedokterangg170328
