Toolkit / Depression
HAM-D: Hamilton Depression Rating Scale (17-item)
The most widely used clinician-rated depression scale, and the standard outcome measure in antidepressant trials. Seventeen items; nine are scored 0–4 and eight are scored 0–2.
Interpreting the total
| 0–7 | No depression |
| 8–16 | Mild |
| 17–23 | Moderate |
| 24–52 | Severe |
Notes
- Severity bands follow Zimmerman et al. (2013). Older literature uses other cut-offs; check which convention your department or trial uses.
- Remission is commonly defined as a total of 7 or less; response as a 50% or greater reduction from baseline.
- The original weight-loss anchors use pounds (1 lb ≈ 0.45 kg); kilogram equivalents are shown here.
References
- Hamilton M. A rating scale for depression. J Neurol Neurosurg Psychiatry. 1960;23:56–62.
- Hamilton M. Development of a rating scale for primary depressive illness. Br J Soc Clin Psychol. 1967;6(4):278–296.
- Zimmerman M, Martinez JH, Young D, Chelminski I, Dalrymple K. Severity classification on the Hamilton Depression Rating Scale. J Affect Disord. 2013;150(2):384–388.
In the public domain.
An educational aid for clinicians, not a substitute for clinical judgement. Scores support, but never replace, a full assessment. Your answers on this page are never stored or sent.
Spotted an error in this scale?
Interpreting the total
| 0–7 | No depression |
| 8–16 | Mild |
| 17–23 | Moderate |
| 24–52 | Severe |
Notes
- Severity bands follow Zimmerman et al. (2013). Older literature uses other cut-offs; check which convention your department or trial uses.
- Remission is commonly defined as a total of 7 or less; response as a 50% or greater reduction from baseline.
- The original weight-loss anchors use pounds (1 lb ≈ 0.45 kg); kilogram equivalents are shown here.
References
- Hamilton M. A rating scale for depression. J Neurol Neurosurg Psychiatry. 1960;23:56–62.
- Hamilton M. Development of a rating scale for primary depressive illness. Br J Soc Clin Psychol. 1967;6(4):278–296.
- Zimmerman M, Martinez JH, Young D, Chelminski I, Dalrymple K. Severity classification on the Hamilton Depression Rating Scale. J Affect Disord. 2013;150(2):384–388.
In the public domain.
This is an educational aid for clinicians, not a substitute for clinical judgement. Scores and calculations support, but never replace, a full assessment. All entries were made by the user; the website does not verify them and accepts no responsibility for decisions based on them. Nothing entered on the website is stored or sent.
