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Hamilton Rating Scale for Anxiety (HAM-A)

Name of questionnaire Hamilton Rating Scale for Anxiety (HAM-A)
Type of questionnaire-description,age Assesses anxiety symptoms; most widely used as an outcomemeasure in treatment of general anxiety disorder
Number of items 14
Number of domains & categories 2
Name of categories/domains   psychic subscale and somatic subscale
Scaling of items 0-4
Scoring available: with permission or free Free
Scoring Test-retest reliability Yes
Scoring Internal consistency Y alpha=0.77 to 0.92
Validity Y, compared with clinical assessment and Covi anxiety scale
Language English
Translations in other languages (if yes, then list the languages) Cantonese, French, Spanish
Developer name Max Hamilton, MD
Developer contact information Deceased
Availability of questionnaire: needs permission from developer, cost or freely available public domain
Limitations Anxiolytic and antidepressant effects cannot be clearly distinguished. HAM-A was unable to detect anxiety states in our sample of depressed patients.
Link to the questionnaire (if available) Click Here to View the Questionaire
Other comments Clinician administered, semi-structured; structured interview guide available (SIGH-A); sensitivity to change during anxiolytic treatment is good
References (original publication) Hamilton, M., Diagnosis and rating of anxiety. British Journal of Psychiatry, 1969. Special Publication No 3.: pp. 76–79.
Maier W, Buller R, Philipp M, Heuser I. The Hamilton Anxiety Scale: reliability, validity and sensitivity to change in anxiety and depressive disorders. J Affect Disord 1988;14(1):61–8.
Last Reviewed: June 2016