Journal of Sasang Constitutional Medicine
  • pISSN: 1226-4075
  • eISSN: 2287-786X
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CURRENT ISSUE
Title
One year test-retest reliability of the Korea Sasang constitutional diagnostic questionnaire (KS-15) in university students
Authors
Kwang-Ho Bae1, Sang-Hyuk Kim 1, Ho-Yeon Go 2, Ki-Hyun Park 1, Siwoo Lee 1, Soojin Lee 3
Affiliations
1 Future Medicine Division, Korea Institute of Oriental Medicine
2 Department of Internal Medicine, College of Korean Medicine, Semyung University
3 Department of Physiology, College of Korean Medicine, Sangji University
Source
JSCM
Year
2019
Volume
31
Issue
2
Page
12-21
Information
Received
June 10, 2019
Revised
June 12, 2019
Accepted
June 25, 2019
DOI
https://doi.org/10.7730/JSCM.2019.31.2.
C.author
Soojin Lee (jinlee@sangji.ac.kr) 
Published
June 30, 2019
Abstract
Objectives
This study was aimed to evaluate the one-year test-retest reliability of the Korea Sasang constitutional diagnostic questionnaire (KS-15) in university students.
Methods
In March 2017, and March 2018, a survey was sent by email to 583 Korean medicine students in two universities. Of these, 149 (25.6%) participated and completed the first survey (test) and second survey (retest). Participants responded to the KS-15 questionnaire and the general characteristics including their age, sex, height, and weight. Cohen’s kappa Spearman’s rank correlation coefficient and agreement rate (%) were used for the test-retest reliability for each question item and the diagnosis of the Sasang constitution. The independent T-test was used to determine the difference in BMI between Sasang constitutional accordance and discordance groups obtained from the test-retest results of KS-15.
Results
The agreement of Sasang constitutional diagnosis was 75.8% (Kappa = 0.618), indicating that KS-15 had a certain level (substantial) of test-retest reliability. However, the kappa of each item was 0.161 ~ 0.620, which showed a large difference between the items. The agreements of each Sasang constitution were 85.1% for Taeeumin, 73.6% for Soeumin, and 58.6% for Soyangin. There was no significant difference in the BMI change between Sasang constitutional accordance and discordance groups in the test-retest.
Conclusions
These results indicate KS-15 has a reliable one-year test-retest reliability. However, further studies will be required to improve reliability, validity and application across different age ranges for the practical utilization of KS-15.
Keyword
Sasang Constitution, Questionnaire, KS-15, Reliability, test-retest
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