The Development of Sasang Constitutional Discriminant Function Based on the Horizontal Widths and Vertical Gaps in the Body Shape

In order to make a diagnosis of patient’s Sasang constitution, oriental doctors use the Sasang constitution questionnaire for doctors(SSCQ-D). This check list has 105 questions and 88 items of them are used for Sasang constitutional discriminant function, and they are divided into four categories. To assess physical appearance, which is one of the four categories, we measure 5 widths and 8 circumferences of a patient’s body by using the large sliding caliper and tape line. In this study, we use the 3D scanner ibs-2000 and measure the 5 widths and 4 vertical gaps between the widths level and compare the accuracy between the manual measurement and the non-contact measurement with a 3D scanner. We have collected 1724 questionnaires from the 5 oriental medical hospitals and classified them according to Sasang constitution, sex, age and BMI and made an analysis using the discriminant analysis model. In the case of female who were 33~64 years old and normal weight, the accuracy of the manual measurement was 76.78% and the non-contact measurement with the 3D scanner was 76.25%. As a result, there is little difference between the two measurements. We can use 5 widths and 4 vertical gaps as useful items to assess physical appearance.