Exhibit 7.1 The Zung Self-Rating Depression Scale
Note: The scores shown here are not included in the version presented to the respondent; they are replaced by boxes in which the respondent places check marks. The raw scores are summed and converted to a 25–100 scale by dividing the total by 0.8. Please answer these items as they pertain to you now.
None or Good Most
a little Some of part of or all of
of the time the time the time the time
1. I feel down-hearted, blue, and sad. 1 2 3 4
2. Morning is when I feel the best. 4 3 2 1
3. I have crying spells or feel like it. 1 2 3 4
4. I have trouble sleeping through the night. 1 2 3 4
5. I eat as much as I used to. 4 3 2 1
6. I enjoy looking at, talking to, and being with 4 3 2 1
attractive women/men.
7. I notice that I am losing weight. 1 2 3 4
8. I have trouble with constipation. 1 2 3 4
9. My heart beats faster than usual. 1 2 3 4
10. I get tired for no reason. 1 2 3 4
11. My mind is as clear as it used to be. 4 3 2 1
12. I find it easy to do the things I used to. 4 3 2 1
13. I am restless and can’t keep still. 1 2 3 4
14. I feel hopeful about the future. 4 3 2 1
15. I am more irritable than usual. 1 2 3 4
16. I find it easy to make decisions. 4 3 2 1
17. I feel that I am useful and needed. 4 3 2 1
18. My life is pretty full. 4 3 2 1
19. I feel that others would be better off if I were dead. 1 2 3 4
20. I still enjoy the things I used to do. 4 3 2 1
Adapted from Zung WWK. How normal is depression? Kalamazoo, Michigan: The Upjohn Company, 1981:17. Used with permission from Pfizer, Inc. All rights reserved.