Confirmative factor analysis in the health literacy questionnaire and its applications in Chinese residents / 北京大学学报(医学版)

ABSTRACT

Objective:To evaluate construct validity of China residents health literacy questionnaire and explore the application of confirmative factor analysis(CFA)in health literacy measurements.Methods:CFA was performed on dimension of basic healthy skills in the questionnaire.Latent variable scores and comprehensive score based on factor variance weight were calculated.Comparison among the latent variable scores,comprehensive scores and proportion of knowing was conducted via GLM or Logistic model.Results:Two factors named general capacity and emergency capacity were well fitted(?2=12.12,P=0.356,IFI=0.998,TLI=0.996,RMSEA=0.007).According to comprehensive score the sample qualification rate of basic health literacy was 38.5%(785/2 040),much similar to 38.2%(780/2 040)which is calculated by original item scores.Latent variable score or comprehensive score has more statistical power than that of proportion of knowing in multivariate analysis.Conclusion:CFA is a useful tool and valuable for applying in the field of health literacy measurement and analysis.