Hospital Anxiety and Depression Scale (HADS)
Also known as: HADS, HADS-A, HADS-D
The Hospital Anxiety and Depression Scale (HADS) is a 14-item self-report instrument measuring anxiety and depression symptoms in medically ill populations. Developed by Zigmond and Snaith in 1983, the HADS was specifically designed for hospital and general medical settings where somatic symptoms of medical illness may confound assessment. It remains the standard anxiety-depression measure in medical, oncology, and cardiac populations worldwide.
Key highlights
- Specifically designed to avoid somatic symptom overlap, enabling clean assessment of psychiatric morbidity in medically ill populations
- Brief 14-item format is practical for busy medical settings and hospital wards
- Two independent subscales (HADS-A and HADS-D) provide distinct anxiety and depression scores
- Extensive validation in cardiac, oncology, and chronic disease populations with strong psychometric properties
Intuition
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How it works
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When to use it
The HADS is the gold standard anxiety-depression measure in hospital, cardiac, oncology, and chronic illness populations. It is ideal for identifying psychiatric morbidity in medically ill patients without confounding medical symptoms. The scale is less appropriate in pure psychiatric settings (where longer, more comprehensive measures are preferred) but excels in general medicine, surgery, primary care, and outpatient medical clinics.
Strengths & limitations
- Specifically designed to avoid somatic symptom overlap, enabling clean assessment of psychiatric morbidity in medically ill populations
- Brief 14-item format is practical for busy medical settings and hospital wards
- Two independent subscales (HADS-A and HADS-D) provide distinct anxiety and depression scores
- Extensive validation in cardiac, oncology, and chronic disease populations with strong psychometric properties
- Less comprehensive than longer depression measures; does not assess suicidal ideation or detailed symptom profiles
- Exclusion of somatic items limits its use in psychiatry where somatic symptoms are clinically relevant
- Four-point response scale may show floor or ceiling effects in some populations
Common pitfalls
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Applications
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Frequently asked
Should I combine HADS-A and HADS-D into a total HADS score?
No. HADS-A and HADS-D are independent subscales measuring distinct constructs (anxiety vs. depression) and should be interpreted separately. Many medically ill patients have selective elevation of one subscale; combining them masks clinically important patterns.
What HADS cutoff indicates clinical caseness?
Standard cutoff is HADS-A or HADS-D >10 for probable clinical anxiety or depression. Scores 8–10 are borderline and warrant clinical judgment. Some populations use HADS >11; consult population-specific validation studies for your setting.
Is HADS appropriate for psychiatric patients without medical illness?
The HADS was designed for medical populations. In pure psychiatric settings, longer measures like the Hamilton Anxiety Rating Scale or Depression Rating Scale provide more comprehensive assessment. HADS can be used in psychiatry but may miss somatic symptom details.
How sensitive is HADS to treatment change in medical patients?
HADS is moderately sensitive to psychotherapy and antidepressant effects in medically ill patients. A reduction of 2–3 points on each subscale typically indicates meaningful improvement, though changes may be slower than in psychiatric populations due to ongoing medical illness.
Sources
- 1.Zigmond, A. S., & Snaith, R. P. (1983). The Hospital Anxiety and Depression Scale. Acta Psychiatrica Scandinavica, 67(6), 361-370.
- 2.Bjelland, I., Dahl, A. A., Haug, T. T., & Neckelmann, D. (2002). The validity of the Hospital Anxiety and Depression Scale: An updated literature review. Journal of Psychosomatic Research, 52(2), 69-77.
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Cite this page
ScholarGate. (2026, June 3). Hospital Anxiety and Depression Scale. ScholarGate. https://scholargate.app/clinical-psychology/hads