What score warrants treatment for depression?

PHQ-9 score ≥10 has 88% sensitivity and 88% specificity for major depressive disorder. Clinical guidelines suggest: 10–14 consider therapy or antidepressants; 15–19 antidepressants recommended; ≥20 antidepressants + psychotherapy or urgent psychiatric referral.

How do I handle a positive Q9 (suicidal ideation)?

Any endorsement of Question 9 (thoughts of self-harm or suicide) requires direct assessment regardless of total PHQ-9 score. Ask about frequency, intent, plan, and means. PHQ-9 score does not replace a full suicide risk assessment.

What is a clinically meaningful PHQ-9 change?

A 5-point reduction on PHQ-9 is the minimum clinically important difference (MCID). Response to treatment is defined as ≥50% reduction from baseline. Remission is a score <5. PHQ-9 should be repeated every 4 weeks during active treatment.

PHQ-9 Depression Severity Score Calculator

Calculates the Patient Health Questionnaire-9 (PHQ-9) depression severity over the past 2 weeks: 0–4 = minimal/none; 5–9 = mild; 10–14 = moderate; 15–19 = moderately severe; 20–27 = severe. Question 9 (suicidal ideation) scored separately regardless of total.

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Frequently Asked Questions

What score warrants treatment for depression?

How do I handle a positive Q9 (suicidal ideation)?

What is a clinically meaningful PHQ-9 change?