Yang Cao|Xiaoyan Yan|Xiaoyan Ma|Rui Wang|Saga Johansson|Mari?Ann Wallander|Jia He
Validation of a survey methodology for gastroesophageal reflux disease in China
Second Military Medical University|Second Military Medical University|Second Military Medical University|Second Military Medical University|AstraZeneca (Sweden)|University of Gothenburg|Uppsala University|Second Military Medical University
gastroesophageal reflux disease gerd causes wide range clinical symptoms potentially serious complications epidemiological data gerd china limited aim pilot study develop validate methodology epidemiological study gerd chinaregionally stratified randomized samples shanghai residents n 919 completed mandarin translations reflux disease questionnaire rdq gerd impact scale quality life reflux dyspepsia qolrad questionnaire 36item short form health survey sf36 reliability construct validity tested appropriate statistical analysesthe response rate 86 testretest reliability coefficients rdq gerd impact scale qolrad sf36 080 071 093 096 respectively cronbachs alpha coefficients 086 080 098 090 respectively dimension scores highly correlated total scores qolrad sf36 factor analysis showed credible construct validity rdq gerd impact scale sf36 rdq gerd score significantly negatively correlated qolrad dimensions food drink problems social functioning significantly negatively correlated dimensions sf36 eight sf36 dimensions significantly correlated qolrad total scorethis study developed tested successful survey methodology investigation gerd china questionnaires used demonstrated credible reliability construct validity supporting use larger epidemiological surveys gerd china