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[Application of factor analysis in development and validation of a new questionnaire for quality of life]
Li Zhao1, Kelvin Chan, Kwokfai Leung
1Research and Development Division, School of Chinese Medicine, Hong Kong Baptist University.
Objective:
To explore the application of factor analysis in creating a new health-related questionnaire for evaluating quality of life, the Chinese for Quality of Life Instrument (ChQOL).
Methods:
Two hundred and seventy-three subjects selected from two provinces of North China (Ningxia) and South China (Guangdong) were investigated by ChQOL, and the preliminary version was completed with factor analysis.
Results:
Fifty items were developed using factor analysis. The final structure model of ChQOL was confirmed through the screening and verification of factor structural model on the 78 items of ChQOL, a new questionnaire with more rational structure was confirmed.
Conclusion:
Factor analysis is an effective method in developing new questionnaire.
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