Michitaka Honda1, Takafumi Wakita2, Yoshihiro Onishi3, Souya Nunobe4, Akinori Miura5, Tatsuto Nishigori6, Hiroshi Kusanagi7, Takatsugu Yamamoto8, Alexander Boddy9, Shunichi Fukuhara10,11. 1. Department of Gastroenterological Surgery, Cancer Institute Hospital, Gastroenterological Center, Japanese Foundation for Cancer Research, Tokyo, Japan. michitaka.honda@jfcr.or.jp. 2. Department of Sociology, Kansai University, Osaka, Japan. 3. Institute for Health Outcomes & Process Evaluation Research (iHope International), Kyoto, Japan. 4. Department of Gastroenterological Surgery, Cancer Institute Hospital, Gastroenterological Center, Japanese Foundation for Cancer Research, Tokyo, Japan. 5. Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan. 6. Department of Surgery, Tenri Hospital, Nara, Japan. 7. Department of Surgery, Kameda Medical Center, Chiba, Japan. 8. Department of Internal Medicine, Teikyo University School of Medicine, Tokyo, Japan. 9. Department of Surgery, University Hospitals of Leicester NHS Trust, Leicester, UK. 10. Department of Healthcare Epidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan. 11. Center for Innovative Research for Community and Clinical Excellence, Fukushima Medical University, Fukushima, Japan.
Abstract
BACKGROUND:Patients who have undergone esophagectomy or gastrectomy have certain dietary limitations because of changes to the alimentary tract. This study attempted to develop a psychometric scale, named "Esophago-Gastric surgery and Quality of Dietary life (EGQ-D)," for assessment of impact of upper gastrointestinal surgery on diet-targeted quality of life. METHODS: Using qualitative methods, the study team interviewed both patients and surgeons involved in esophagogastric cancer surgery, and we prepared an item pool and a draft scale. To evaluate the scale's psychometric reliability and validity, a survey involving a large number of patients was conducted. Items for the final scale were selected by factor analysis and item response theory. Cronbach's alpha was used for assessment of reliability, and correlations with the short form (SF)-12, esophagus and stomach surgery symptom scale (ES(4)), and nutritional indicators were analyzed to assess the criterion-related validity. RESULTS: Through multifaceted discussion and the pilot study, a draft questionnaire comprising 14 items was prepared, and a total of 316 patients were enrolled. On the basis of factor analysis and item response theory, six items were excluded, and the remaining eight items demonstrated strong unidimensionality for the final scale. Cronbach's alpha was 0.895. There were significant associations with all the subscale scores for SF-12, ES(4), and nutritional indicators. CONCLUSIONS: The EGQ-D scale has good contents and psychometric validity and can be used to evaluate disease-specific instrument to measure diet-targeted quality of life for postoperative patients with esophagogastric cancer.
RCT Entities:
BACKGROUND:Patients who have undergone esophagectomy or gastrectomy have certain dietary limitations because of changes to the alimentary tract. This study attempted to develop a psychometric scale, named "Esophago-Gastric surgery and Quality of Dietary life (EGQ-D)," for assessment of impact of upper gastrointestinal surgery on diet-targeted quality of life. METHODS: Using qualitative methods, the study team interviewed both patients and surgeons involved in esophagogastric cancer surgery, and we prepared an item pool and a draft scale. To evaluate the scale's psychometric reliability and validity, a survey involving a large number of patients was conducted. Items for the final scale were selected by factor analysis and item response theory. Cronbach's alpha was used for assessment of reliability, and correlations with the short form (SF)-12, esophagus and stomach surgery symptom scale (ES(4)), and nutritional indicators were analyzed to assess the criterion-related validity. RESULTS: Through multifaceted discussion and the pilot study, a draft questionnaire comprising 14 items was prepared, and a total of 316 patients were enrolled. On the basis of factor analysis and item response theory, six items were excluded, and the remaining eight items demonstrated strong unidimensionality for the final scale. Cronbach's alpha was 0.895. There were significant associations with all the subscale scores for SF-12, ES(4), and nutritional indicators. CONCLUSIONS: The EGQ-D scale has good contents and psychometric validity and can be used to evaluate disease-specific instrument to measure diet-targeted quality of life for postoperativepatients with esophagogastric cancer.
Authors: John Y Shin; Sani H Kizilbash; Steven I Robinson; Joon H Uhm; Julie E Hammack; Daniel H Lachance; Jan C Buckner; Aminah Jatoi Journal: J Neurooncol Date: 2016-03-15 Impact factor: 4.130