Hamilton Depression Rating Scale (HAM-D, 1960) - Gold Standard Depression Measure

Hamilton Depression Rating Scale (HAM-D): Clinician-rated depression scale

The first widely-used clinician-administered depression rating scale, and still the gold-standard outcome measure for antidepressant clinical trials. Max Hamilton at the University of Leeds developed the HAM-D in 1960 to provide an objective severity measure that did not rely on patient self-report. Used in essentially every antidepressant drug trial from 1960 to the present; the 17-item HAM-D is the FDA's preferred efficacy measure.

About the Hamilton Depression Rating Scale (HAM-D)

By the late 1950s, the first generation of antidepressant medications (imipramine 1958, MAOIs 1957) were entering clinical trials. The pharmaceutical industry urgently needed a reliable, objective measure of depression severity for efficacy testing. Self-report instruments like the Beck Depression Inventory (1961) were under development but came too late and were considered too subjective for FDA trials.

Max Hamilton at the University of Leeds developed the Hamilton Depression Rating Scale (HAM-D) in 1960. The HAM-D is administered by a trained clinician who interviews the patient and rates 17 (or in later versions 21) specific symptoms on a 3- or 5-point severity scale. Total scores range from 0 (no depression) to 52 (severe depression in the 17-item version).

The HAM-D became the gold-standard depression severity measure for clinical trials and remains so today. Essentially every antidepressant approved by the FDA in the past 60 years has been validated against the HAM-D. It is also widely used in clinical practice to track treatment response and in research on depression neuroscience. Newer instruments like the Montgomery-Åsberg Depression Rating Scale (MADRS, 1979) and Quick Inventory of Depressive Symptomatology (QIDS) compete with the HAM-D but have not displaced it.

The 2 subtests

17-item clinician interview Depressed mood, guilt, suicide, insomnia (early, middle, late), work and activities, retardation, agitation, anxiety (psychic, somatic), somatic symptoms (GI, general), genital, hypochondriasis, weight loss, insight.

Clinician Required

21-item extended version Adds diurnal variation, depersonalization, paranoid symptoms, obsessional symptoms.

Clinician Required

Source

All test materials and historical content on this page are transcribed from:

Hamilton, M. (1960). A rating scale for depression. Journal of Neurology, Neurosurgery, and Psychiatry, 23, 56-62.

Public domain (UK government-funded clinical work; widely reproduced in clinical practice). Max Hamilton (1912-1988) was a German-born British psychiatrist at the University of Leeds. The original 1960 paper appeared in the Journal of Neurology, Neurosurgery, and Psychiatry, 23, 56-62.

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