2.5.1. Subjective Mood State Questionnaire
TMD, euthymia, Anxiety, mood disturbance, Hostility, Anger, Depression, Confusion, Fatigue
The psychological status was assessed with the following validated questionnaires: the Profile of Mood Status 2nd edition short form for adults (POMS 2) and the Euthymia Scale. POMS 2 is a self-reported questionnaire that assesses mood. It has two categories: the negative mood state and the positive mood state. The negative mood state contains the following five subcategories: Anger–Hostility (AH), Confusion–Bewilderment (CB), Depression–Dejection (DD), Fatigue–Inertia (FI), and Tension–Anxiety (TA). The positive mood state contains Vigor–Activity (VA) and Friendliness (F). The total mood disturbance (TMD) was calculated for the individual participants by subtracting the score of the positive mood from the score of the negative mood. The reliability and validity of the Japanese version of the POMS 2 have been confirmed [The Euthymia Scale is a self-rated questionnaire for the self-assessment of euthymia. The reliability and validity of the Japanese version have recently been reported [