Development of Questionnaire on Knowledge,Attitude and Practice of Children′s Nutrition and Evaluation on Its Reliability and Validity

Objective To develop a questionnaire suitable for measuring knowledge,attitude and practice of children′s dietary nutrition. Methods Pearson correlation analysis was used to evaluate test-retest reliability,Cronbach′s α coefficient was used to evaluate internal consistency reliability,Correlation analysis of the sum with the singles was used to evaluate content validity.Factor analysis was used to assess the construct validity of the questionnaire. Results The test-retest reliability coefficients of the knowledge dimension,attitude dimension,practice dimension,and the total questionnaire were 0.684,0.792,0.752,and 0.705 respectively;and their Cronbach′s α coefficients were 0.816,0.889,0.981,and 0.943 respectively.Except for a2,p2,p8 and p10,the correlation coefficients of scores of other items with the total scores of the questionnaire to were greater than 0.200.Except for k7,p2,p8,p10,the correlation coefficients of scores of other items with the total scores of the dimensions they pertain to were greater than 0.300.Three common factor were abstracted by using factor analysis,with the cumulative variance contribution rate of 51.21%.The communality of 56% items after extraction of common factor was greater than 0.5. Conclusion The reliability and validity of the questionnaire is reasonable.It could provide valuable reference for future similar surveys.