Table 4 The mean score and standard deviation of each item of the Japanese version of the Euthymia scale stratified the categories by the history of MDE and psychological distress (N = 1030)

1. If I become sad, anxious or angry it is for a short time

0.63 (0.5)

0.83 (0.4)

0.71 (0.5)

0.73 (0.4)

0.50 (0.5)

0.61 (0.5)

0.34 (0.5)

< 0.001

36.83

2. I do not keep thinking about negative experiences

0.51 (0.5)

0.76 (0.4)

0.53 (0.5)

0.56 (0.5)

0.39 (0.5)

0.35 (0.5)

0.20 (0.4)

< 0.001

41.14

3. I am able to adapt to changing situations

0.63 (0.5)

0.83 (0.4)

0.71 (0.5)

0.71 (0.5)

0.50 (0.5)

0.52 (0.5)

0.34 (0.5)

< 0.001

36.37

4. I try to be consistent in my attitudes and behaviors

0.77 (0.4)

0.80 (0.4)

0.87 (0.3)

0.72 (0.4)

0.79 (0.4)

0.78 (0.4)

0.69 (0.5)

0.006

3.31

5. Most of the time I can handle stress

0.55 (0.5)

0.82 (0.4)

0.61 (0.5)

0.59 (0.5)

0.42 (0.5)

0.43 (0.5)

0.20 (0.4)

< 0.001

53.44

6. I generally feel cheerful and in good spirits

0.64 (0.5)

0.89 (0.3)

0.73 (0.4)

0.70 (0.5)

0.55 (0.5)

0.39 (0.5)

0.29 (0.5)

< 0.001

55.11

7. I generally feel calm and relaxed

0.71 (0.5)

0.92 (0.3)

0.81 (0.4)

0.77 (0.4)

0.60 (0.5)

0.48 (0.5)

0.41 (0.5)

< 0.001

45.39

8. I generally feel active and vigorous

0.51 (0.5)

0.75 (0.4)

0.68 (0.5)

0.49 (0.5)

0.39 (0.5)

0.35 (0.5)

0.20 (0.4)

< 0.001

43.51

9. My daily life is filled with things that interest me

0.54 (0.5)

0.71 (0.5)

0.64 (0.5)

0.53 (0.5)

0.45 (0.5)

0.35 (0.5)

0.33 (0.5)

< 0.001

19.59

10. I wake up feeling fresh and rested

0.48 (0.5)

0.77 (0.4)

0.59 (0.5)

0.49 (0.5)

0.33 (0.5)

0.30 (0.5)

0.16 (0.4)

< 0.001

55.32

Total scores

5.96 (3.04)

8.08 (2.29)

6.89 (2.52)

6.30 (2.41)

4.93 (2.59)

4.57 (2.45)

※ < 0.001

116.22