Hamilton Anxiety Rating Scale (HAM-A): Measuring Severity

The HAM-A is a clinician-rated scale that measures anxiety severity in adults. It assesses mental and physical symptoms, allowing doctors to track treatment results over time.

Hamilton Anxiety Rating Scale (HAM-A) PDF assessment form for measuring anxiety severity
HAM-A

Hamilton Anxiety Rating Scale (HAM-A)

The Hamilton Anxiety Rating Scale (HAM-A) is a classic clinical tool used to rate the severity of a patient's anxiety. Consisting of 14 items, it measures both psychic and somatic symptoms to help doctors track progress. It's a standard method for assessing symptom intensity in research and healthcare settings.

Category

Mental health
Diagnostic
Monitoring

Disease

Mental Health
Assessment
Clinical Measurement

Source

(Hamilton, 1959)

Author Name

Hamilton, M. (1959)

What is Hamilton Anxiety Rating Scale (HAM-A)

The Hamilton Anxiety Rating Scale (HAM-A) is a widely used tool for measuring anxiety severity. It helps clinicians track symptom changes clearly. This scale features 14 specific items that cover a broad range of symptoms. It organises these into two main groups to give a clear picture of a patient's condition. It measures psychic anxiety, such as mental agitation, and somatic anxiety, which involves physical complaints. Each item is rated on a scale from zero to four, allowing the total score to accurately reflect the overall intensity of symptoms. Since it is a clinician-rated tool, a healthcare professional conducts the interview to ensure accuracy. This approach helps in assessing how well a treatment works over time. It is a reliable choice for clinical settings and research trials, making it easier to guide patient care plans effectively.

HAM-A Scoring

The Hamilton Anxiety Rating Scale (HAM-A) can be scored using one main approach based on item summation. Clinicians rate each of the 14 items on a scale from 0, meaning not present, to 4, indicating very severe symptoms. To get the total score, you just add these numbers up for a result between 0 and 56. Generally, a score below 17 suggests mild anxiety, while 18 to 24 indicates mild to moderate levels, and anything above 25 points to severe issues. This total helps doctors monitor how a patient is tracking over time.

View scoring form

Advantages

Outcome tracking

Measures healthcare intervention results systematically.

Research validity

Strengthens evidence through systematic measurement approaches.

Diagnostic accuracy

Enables precise identification of patient health status.

Global standards

Meets international clinical assessment requirements.

15
Minutes
14
Questions

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