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Testing result of known-group validity
| Sum of K-SSS-8 | Sum of PHQ-15 | Sum of EQ-5D | |
|---|---|---|---|
| Group | Group 1, 2, 3 | Group 1, 2, 3 | Group 1, 2, 3 |
| J-T statistic | -2.510 | -1.670 | -2.729 |
| p | 0.012 | 0.095 | 0.006 |
K-SSS-8: Korean version of Somatic Symptom Scale-8, PHQ-15: Patient Health Questionnaire-15, EQ-5D: EuroQol 5 Dimension, J-T: Jonckheere-Terpstra test
