| |
Mean value if item deleted
|
Scale variance if item deleted
|
Item-total correlation
|
Cronbach’s Alpha if item deleted
|
|---|
|
1. Depression
|
23.05
|
75.472
|
.694
|
.851
|
|
2. Sleep disturbance
|
23.51
|
80.036
|
.301
|
.867
|
|
3. Appetite disturbance
|
23.80
|
78.981
|
.353
|
.865
|
|
4. Social impairment
|
23.41
|
77.338
|
.504
|
.858
|
|
5. Activity/energy reduction
|
23.36
|
76.059
|
.630
|
.854
|
|
6. Reduced motivation
|
23.34
|
77.189
|
.569
|
.856
|
|
7. Reduced concentration
|
23.66
|
79.047
|
.497
|
.859
|
|
8. Anxiety
|
23.76
|
75.638
|
.636
|
.853
|
|
9. Anhedonia
|
23.47
|
76.870
|
.615
|
.854
|
|
10. Flattened affect
|
24.06
|
79.882
|
.391
|
.862
|
|
11. Worthlessness
|
23.48
|
75.489
|
.635
|
.853
|
|
12. Helplessness
|
23.27
|
72.602
|
.727
|
.848
|
|
13. Suicidal ideation
|
23.82
|
72.795
|
.649
|
.851
|
|
14. Guilt
|
23.92
|
76.922
|
.571
|
.856
|
|
15. Psychotic symptoms
|
24.69
|
80.847
|
.348
|
.864
|
|
16. Irritability
|
24.27
|
83.552
|
.171
|
.869
|
|
17. Lability
|
24.04
|
81.696
|
.254
|
.867
|
|
18. Increased motor drive
|
24.78
|
86.404
|
−.033
|
.874
|
|
19. Increased speech
|
24.86
|
85.893
|
.023
|
.871
|
|
20. Agitation
|
24.36
|
78.720
|
.458
|
.860
|
- K-BDRS Korean version of the Bipolar Depression Rating Scale
