Psychometric validation of the Chinese version of the Short Inflammatory Bowel Disease Questionnaire and evaluation of its measurement invariance across sex

Health and Quality of Life Outcomes

Shaojie Li¹  Lili Chi²  Song Guo²  Junwei Liang³  Jiahui Liu³  Dajuan Sun⁴ 

[1]Department of Social Medicine and Health Service Management, Xiangya School of Public Health, Central South University, 410078, Changsha, China

[2]Department of Spleen and Stomach Diseases, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 250014, Jinan, China

[3]First Clinical Medical College, Shandong University of Traditional Chinese Medicine, 250355, Jinan, China

[4]First Clinical Medical College, Shandong University of Traditional Chinese Medicine, 250355, Jinan, China

[5]Department of Spleen and Stomach Diseases, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, 250014, Jinan, China

关键词: Inflammatory bowel disease;    Quality of life;    Assessment tool;    Validation;    Reliability;    Measurement invariance;   

DOI  :  10.1186/s12955-021-01890-x

来源: Springer

【 摘 要 】

BackgroundThis study aimed to evaluate the psychometric properties of the Chinese version of the Short Inflammatory Bowel Disease Questionnaire (C-SIBDQ), and its measurement invariance across sex in Chinese patients with inflammatory bowel disease (IBD).MethodsBetween September 2018 and July 2021, 284 patients with IBD were recruited from a spleen and stomach clinic. All participants completed the C-SIBDQ, 12-item Short-Form Health Survey (SF-12), nine-item Patient Health Questionnaire Depression Scale (PHQ-9), and the seven-item Generalized Anxiety Disorder Scale (GAD-7). Floor and ceiling effects were evaluated by testing frequencies and composition ratios for the minimum and maximum C-SIBDQ scores. Exploratory and confirmatory factor analysis (CFA) were used to evaluate the C-SIBDQ’s factor structure and construct validity. Convergent validity was evaluated through examining bivariate correlations between the C-SIBDQ and the SF-12, PHQ-9, and GAD-7. Internal consistency reliability and retest reliability were evaluated by respectively calculating the Cronbach’s α and the intraclass correlation coefficient (ICC) among a subsample (n = 79) after 2 weeks. The measurement invariance across sex was evaluated through multiple-group CFA.ResultsThe C-SIBDQ scores showed no floor or ceiling effects and had a single-factor structure and good convergent validity, with significant correlations with the SF-12, PHQ-9 and GAD-7. Good internal consistency (Cronbach’s α = 0.920) and test–retest reliability (ICC = 959) were observed. The C-SIBDQ also showed measurement invariance across sex, and females showed higher C-SIBDQ scores than males.ConclusionsThe C-SIBDQ has high reliability, validity, and stability across sex, and can be used in clinics to assess the health-related quality of life of patients with IBD.

【 授权许可】

CC BY