The Journal of Internal Korean Medicine (대한한방내과학회지)

The Society of Internal Korean Medicine (대한한방내과학회)
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Development of a Food Retention Questionnaire for Functional Dyspepsia and the Analysis of Its Reliability and Validity

기능성소화불량의 식적설문지 개발과 신뢰도 및 타당도 검정

  • Hwang, Mi-ni (Dept. of Clinical Korean Medicine, Graduate School, Kyung Hee University) ;
  • Ha, Na-yeon (Dept. of Clinical Korean Medicine, Graduate School, Kyung Hee University) ;
  • Ko, Seok-jae (Dept. of Clinical Korean Medicine, Graduate School, Kyung Hee University) ;
  • Park, Jae-woo (Dept. of Clinical Korean Medicine, Graduate School, Kyung Hee University) ;
  • Kim, Jin-sung (Dept. of Clinical Korean Medicine, Graduate School, Kyung Hee University)
  • 황미니 (경희대학교 대학원 임상한의학과) ;
  • 하나연 (경희대학교 대학원 임상한의학과) ;
  • 고석재 (경희대학교 대학원 임상한의학과) ;
  • 박재우 (경희대학교 대학원 임상한의학과) ;
  • 김진성 (경희대학교 대학원 임상한의학과)
  • Received : 2019.05.24
  • Accepted : 2019.06.28
  • Published : 2019.06.30
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Abstract

Objectives: Several pattern diagnosis questionnaires have been developed to objectify the process of pattern diagnosis in Korean medicine. In this context, this study aimed to develop a food retention questionnaire for functional dyspepsia (FRQ-FD) by modifying the previously developed food retention questionnaire (FRQ) and to verify its reliability and validity. Furthermore, this study aimed to identify the optimal cut-off value of the FRQ-FD for standardization and use in clinical situations. Methods: To develop the FRQ-FD, we extracted the major symptoms of food retention pattern for functional dyspepsia from Chinese/Korean medicine textbooks and requested an importance survey from experts using the Delphi method. The first draft of the FRQ-FD was composed of 25 questions comprising 8 questions from the textbooks and the Delphi method and 17 questions from the FRQ already developed in 2013. To analyze its reliability, validity, and optimal cut-off value, 60 subjects were enrolled in this study from June 25 to August 13, 2018. Thirty patients were diagnosed as both functional dyspepsia and food retention pattern, and 30 healthy participants were not. All participants were requested to fill up the FRQ-FD, Stomach Qi Deficiency Questionnaire (SQDQ), Scale for Stomach Qi Deficiency pattern (SSQD), visual analog scale (VAS) for dyspepsia, Nepean Dyspepsia Index-Korean version (NDI-K), and functional dyspepsia-related quality of life (FD-QoL). Results: No statistically significant differences were found in sex distribution, age, and body mass index between the patient group and the control group. As five questions affected the reliability negatively and three questions affected the clinical validity negatively, we decided to exclude the eight questions upon further investigation. The Cronbach's ${\alpha}$ coefficient of the revised FRQ-FD (17 items) was 0.899, and its clinical validity was verified. Construct validity was analyzed by factor analysis and produced five factors. Statistically significant positive correlations were found between the revised FRQ-FD and the other dyspepsia scales, namely, SQDQ, SSQD, VAS, NDI-K, and FD-QoL. VAS and NDI-K especially had strong positive correlations with FRQ-FD. Conclusions: The FRQ-FD developed in this study can provide fundamental reliability and validity for a pattern diagnosis questionnaire. FRQ-FD can help to diagnose food retention pattern in functional dyspepsia patients. Further studies are required to inspect several statistical factors.

Keywords

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