Why use the PHQ-2 instead of the PHQ-9?

The PHQ-2 is ideal for settings where time is limited or as a first-pass screener in large populations. Its brevity makes it practical for routine use in primary care, emergency departments, or intake forms. It captures the two core symptoms of depression: depressed mood and anhedonia.

Can the PHQ-2 be used to monitor treatment?

The PHQ-2 is primarily designed for screening, not for monitoring treatment response. The full PHQ-9 is recommended for tracking changes over time because it captures a broader range of symptoms and has greater sensitivity to change.

Online Medical Tools — PHQ-2

Printed on 2/13/2026

For informational purposes only. This is not medical advice.

Mental Health

PHQ-2

The Patient Health Questionnaire-2 (PHQ-2) is an ultra-brief depression screening tool consisting of the first two items of the PHQ-9. It asks about the frequency of depressed mood and anhedonia (loss of interest or pleasure) over the past two weeks. Each item is scored 0-3, yielding a total score of 0-6. A score of 3 or higher has a sensitivity of 83% and specificity of 92% for major depression, making it an effective first-step screener. Patients who screen positive should be further evaluated with the full PHQ-9.

Compare with PHQ-9

Formula: Total score = sum of 2 items (each 0-3). Range 0-6. Positive screen ≥ 3.

Disclaimer: This tool is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider with questions about your health.