Montgomery-Asberg Depression Rating Scale (MADRS)
Beck's Depression Inventory
Hamilton Rating Scale for Depression
Hospital Anxiety and Depression Scale
Zung Self-Rating Depression Scale
Some notes about the tests and how to score your results:
The MADRS, which dates to 1979, is one of the newer and (arguably) better-constructed tests. Scores range from zero to 60. Interpretation is as follows:
- 0 to 6 – normal/symptom absent
- 7 to 19 – mild depression
- 20 to 34 – moderate depression
- >34 – severe depression.
The Beck Depression Inventory (BDI) dates to 1961 but has been revised several times (most recently in 1996). Scoring is as follows:
- 0–9: indicates minimal depression
- 10–18: indicates mild depression
- 19–29: indicates moderate depression
- 30–63: indicates severe depression.
Zung's Self-Rating Depression Scale dates to 1965 and is not particularly well-constructed, since every question expects you to at least say "a little bit" in response to things that may or may not even apply to you, and thus your minimum score is 20 (the scale doesn't start at zero).
Scores on the Zung test range from 20 through 80. Your total score puts you into one of the following four ranges:
- 20-49 Normal Range
- 50-59 Mildly Depressed
- 60-69 Moderately Depressed
- 70 and above Severely Depressed