Evaluation on the Chinese version of adolescent fat intake behavior of psychological measurement scale and its reliability and validity

Abstract

To develop a suitable fat intake behavior of psychological measurement scales for the Chinese adolescents and evaluate its validity and reliability. According to the multi-stage stratified cluster sampling principle, a total of 3 600 junior students were recruited from the classes in 12 selected high schools in Hangzhou, Wuhan and Xi'an from March to May, 2012. Based on introducing and translating the original scale abroad, Chinese version of adolescent fat intake behavior of psychological measurement scales was utilized in field investigations. The reliability was assessed, using Cronbach's α and split-half reliability; while exploratory factor analysis used to test its validity, with entries-dimension correlation coefficient (IIC), correlation coefficient between the scores and the dimension, and the dimension of correlation coefficient test content validity. The valid subject of the study was 3 448(of whom males were 52.4% (1 806/3 448) and female were 47.6% (1 642/3 448)), while the mean age was (14.85 ± 1.46) years old. The internal consistency reliability (Cronbach's α) for total scale score and four domains were 0.922,0.933, 0.660, 0.773 and 0.869 respectively, whose split-efficacy reliability were separately 0.927, 0.933, 0.790, 0.624 and 0.889. Data from the exploratory factor analysis revealed the following dimensions:the entries were all inclusive, with the cumulative contribution rate at 59.453%, 56.062% and 52.668%, respectively. The results of IIC showed that in the four dimensions, the contained entries between Spearman correlation coefficient have statistically significant, with the r value range of 0.584-0.793, 0.665-0.818, 0.654-0.765 and 0.622-0.747 severely, while other dimensions from weak to moderate relationships, the r value ranged from -0.028 to 0.614. The reliability and validity of the adolescent fat intake behavior of psychological measurement scales (Chinese version) were good, and could be used to measure the fat intake behavior of psychological conditions in Chinese adolescents.