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Development of a Nutrition Quotient (NQ) Equation Modeling for Children and the Evaluation of its Construct Validity in Korea
Author(s) -
Kim HyeYoung P.,
Kwon Sehyug,
Lee JungSug,
Choi YoungSun,
Chung Hae Rang,
Kwak TongKyung,
Park Juyeon,
Lee HyeJin,
Kang MyungHee
Publication year - 2013
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.27.1_supplement.1060.23
Subject(s) - goodness of fit , confirmatory factor analysis , construct validity , statistics , mathematics , psychology , logistic regression , checklist , exploratory factor analysis , test (biology) , residual , structural equation modeling , psychometrics , paleontology , algorithm , cognitive psychology , biology
The objective of this study was to develop and evaluate the construct validity of a nutrition quotient (NQ) for children. In our previous study, the food behavior checklist (FBC) for children's NQ, consisting of 19 items, was grouped into a 5‐factor structure according to the exploratory factor analysis. In this study, the construct validity of the NQ was assessed using a confirmatory factor analysis. Elementary school students (n=1,393) from six large cities completed the NQ test. Indicator tests suggested an adequate model fit (goodness of fit index = 0.9613; adjusted GFI = 0.95; standardized root mean square residual = 0.0464; chi‐square test statistics of <0.001 p‐value, 82.1), and item loadings were significant for all subscales (p <0.05). The standardized path coefficients were used as the weights of the items. The NQ and the factor scores of the student were calculated by the obtained weights of the questionnaire items. Logistic regression was applied to find the significant factors in order to affect a specific nutrient status. The receiver operation characteristic curve analyses were performed in order to find diagnostic cut‐off points of the five factors. The FBC for children's NQ would be a handy and suitable instrument for evaluating dietary behaviors of Korean children. (This research was supported by a grant from Amway Korea Ltd. in 2011.)