Development and Evaluation of GS-SF for Gastric Stuffiness (Wei PI) Patients Based on Item Response Theory, Computerized Adaptive Testing, and Data Simiuation

• Published in: Zhongguo Zhong xi yi jie he za zhi Vol. 35; no. 7; p. 806
• Main Authors: Hou, Zheng-kun, Liu, Feng-bin, Chen, Xin-lin, Li, Xiao-ying, Luo, Di, Xie, Di, Luo, Fang, Che, Xiao-lu
• Format: Journal Article
• Language: Chinese
• Published: China 01-07-2015
• Subjects: Adult; Computer Simulation; Female; Humans; Male; Medicine, Chinese Traditional; Psychometrics; Stomach Diseases - diagnosis; Stomach Diseases - therapy; Surveys and Questionnaires; Young Adult
• ISSN: 1003-5370

To develop and evaluate the short version of patient reported outcomes (PROs) questionnaire for gastric stuffiness (Wei Pi) patients with modern test theory and technologies, hoping to provide testing tools for related clinical practice and scientific researches with higher quality and less administrative and response burdens.
Using descriptive study design, clinical data were collected with sociological questionnaire and previous developed full items version of PROs instrument for gastric stuffiness (Wei Pi) patients via field and online surveys between Sep 2011 and Mar 2012. The statistical analysis group identified the termination parameters firstly, and then selected items with discrimination, fitting residual, item information curve (IIC) , item characteristic curve (ICC), and the rank of computerized adaptive testing (CAT) select proportion, etc. After assumption evaluation of item response theory (IRT), IIC, ICC, difficulty coefficient distribution, items-response relation and thresholds, etc. were use