Item

M

SD

Factor 1

Somatic symptoms (Cronbach’s alpha = 0.87)

1

I was bothered by things that usually don’t bother me.

0.93

0.79

2

I did not feel like eating; my appetite was poor.

0.51

0.70

3

I had trouble keeping my mind on what I was doing.

0.77

0.78

4

I felt that everything I did was an effort.

0.83

0.84

5

My sleep was restless.

0.57

0.82

6

I could not get “going”.

0.61

0.84

Factor 2

Negative affect (Cronbach’s alpha = 0.80)

7

I felt that I could not shake off the blues, even with the help from family or friends.

0.67

0.82

8

I felt depressed.

0.72

0.83

9

I felt lonely.

0.57

0.79

10

I felt sad.

0.56

0.76

Factor 3

Anhedonia (Cronbach’s alpha = 0.76)

11

I felt that I was just as good as other people.

1.63

0.88

12

I felt hopeful about the future.

1.46

0.92

13

I was happy.

1.32

0.87

14

I enjoyed life.

1.40

0.85