Validity and reliability of the Indonesian version of the 9-item Inflammatory Bowel Disease Questionnaire (IBDQ-9)

Abstract

Validity and reliability of the Indonesian version of the 9-item Inflammatory Bowel Disease Questionnaire (IBDQ-9) Dekta Filantropi Esa, Hamzah Shatri, Cleopas Martin Rumende, Adityo Susilo, Hasan Maulahela, Achmad Fauzi, Marcellus Simadibrata Medical Journal of Indonesia Clinical Research ABSTRACT BACKGROUND Decreasing the quality of life (QoL) of patients with inflammatory bowel disease (IBD) will increase morbidity and mortality. A valid and reliable instrument is needed to assess the QoL of patients with IBD. This study aimed to analyze the validity and reliability of the Indonesian version of the 9-item Inflammatory Bowel Disease Questionnaire (IBDQ-9). METHODS This cross-sectional study was conducted using the Indonesian version of the IBDQ-9 in adult patients with IBD at the Gastroenterology Outpatient Clinic, Cipto Mangunkusumo Hospital, Jakarta, in November 2022. Patients aged 18 to 59 years who had experienced IBD for at least 2 weeks and provided informed consents were included. The total score of the IBDQ-9 Indonesian version was compared with the 36- item Short-Form Health Survey (SF-36) using the Spearman's correlation test. Reliability tests were examined using Cronbach’s alpha and the intraclass correlation coefficient (ICC). RESULTS A total of 124 participants were included in this study. The Spearman's test showed a high and significant result for the IBDQ-9 Indonesian version and the SF-36 (r = 0.769 and p<0.001). Cronbach’s alpha and ICC coefficient were equal to 0.883. CONCLUSIONS This study provided evidence of the good validity and reliability of the IBDQ-9 Indonesian version for assessing the QoL of patients with IBD in Indonesia. KEYWORDS inflammatory bowel disease, quality of life