SDSPast 1 weekAbout 3 minutes 👥 No usage yetSource: Zung WWK (1965)

Zung Self-Rating Depression Scale

The SDS is a widely used self-report depression scale. It contains 20 items; the raw total score is multiplied by 1.25 and rounded to obtain the standard score.

What this scale measuresCreated by Zung, the SDS is one of the most widely used self-report depression scales in clinical practice. Its 20 items cover core depressive features (mood, anhedonia, sleep problems, self-evaluation, etc.); a standard score of 50 or more indicates some level of depression and is often combined with insomnia scales for comorbidity screening.
How to read your score
  • Normal25 – 49

    Depression symptoms are absent or mild, and your mood is generally good.

  • Mild depression50 – 59

    Mild depression symptoms are present.

  • Moderate depression60 – 69

    Depression symptoms are noticeable; consider seeking a professional evaluation.

  • Severe depression70 – 100

    Depression symptoms are severe; please seek medical care promptly.

These ranges are for screening reference only and cannot replace a professional diagnosis.

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Important: This result is for self-screening only

All scales on this site are publicly available academic screening tools, not medical devices, and do not constitute a clinical diagnosis. Results are affected by mood, routine, environment, and physical condition.

  • Scale results cannot be used as the sole basis for diagnosis, medication, treatment, or prescription.
  • Do not self-diagnose or self-medicate based solely on scale scores.
  • If you have physical, mental, sleep, or emotional concerns, please consult a qualified healthcare provider.

Users assume full responsibility for any medical or wellness decisions based on these results.