The Reduction of Question Items in Korea Sasang Constitutional Diagnostic Questionnaire (KS-15)

Abstract

The Reduction of Question Items in Korea Sasang Constitutional Diagnostic Questionnaire (KS-15) Sang-Hyuk Kim ・ Ki-Hyun Park ・ Young-Hwa Baek ・ Eun-Su Jang ・ Siwoo Lee Future Medicine Division, Korea Institute of Oriental Medicine Clinical Research Coordinating Team, Clinical Medicine Division, Korea Institute of Oriental Medicine Department of Diagnosis, College of Korean Medicine, Daejeon University *These authors contributed equally to this work Objectives The purpose of this study is to reduce the question items in Korea Sasang Constitutional Diagnostic Questionnaire (KS-15) and to assess the validity. Methods The subjects of this study were 1,553 people who had information on body shape, personality, and symptoms among the data established at the Korean Medicine Data Center. Among them, 155 people were separated into a test group to assess the validity, and the remaining 1,398 were used as training groups for model development. The reduction question items were finally confirmed through discussion by two experts. The model development went through Multinomial Logistic Regression. Results & Conclusions The Percent Correctly Predicted (PCP) in the test group was 60.00% (58.49% in men and 60.78% in women). The PCP of each constitution was 72.6% in Taeeumin, 53.3% in Soeumin, and 50% in Soyangin. The accuracy rate of KS-10 seems to be reasonable considering the ease of use of reduced time required.