Objective To reevaluate the Preschool Children Eating Behavior Questionnaire by using multidimensional item response theory(MIRT),and to explore the feasibility and effectiveness of MIRT in the development of medical scale,in order to make Preschool Children Eating Behavior Questionnaire more completed and concise,thereby providing basic tools for the assessment of children's eating behavior and related research in China. Methods On the basis of extensive review of relevant literature,data were from the results of the Preschool Children Eating Behavior Questionnaire from children aged 3 to 6 in Xi'an city in June 2017. The MIRT were used to evaluate and select the items,such as degree of differentiation,difficulty and guessing coefficient,etc. Reliability and validity of the questionnaire were evaluated by result of Cronbach's α coefficient,split-half reliability coefficient,retest reliability coefficient and factor analysis. And the results were compared with those of the original scale. Results Three items were deleted according to the differentiation degree and difficulty under MIRT,and the dimension of one item was adjusted. The Cronbach’s α coefficient of revised questionnaire was 0.94,the Guttman split-half reliability was 0.81,and the test-retest reliability was 0.73. Exploratory factor analysis showed that the cumulative variance contribution rate was 59.04%,and confirmatory factor analysis indicated that the values of NFI,NNFI,CFI,RMSR were 0.86,0.92,0.93,and 0.04,respectively. There were significant differences on the scores of satiety responsiveness,food responsiveness,food fussiness,and eating habit dimensions among different weight groups. Finally,the reliability and validity of the revised scale were better than the original one. Conclusions The item screening method based on MIRT could improve the reliability and validity of the scale,making the scale more concise. The newly revised Preschool Children's Eating Behavior Questionnaire is more appropriate for evaluation and study of children's eating behavior problems.
Key words
preschool children /
eating behavior /
questionnaire /
multidimensional item response theory
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