The PHQ-9 has 9 questions, each scored 0–3:
0 = Not at all
1 = Several days
2 = More than half the days
3 = Nearly every day
Total Score Range: 0–27
Severity Levels:
0–4 → Minimal or none
5–9 → Mild depression
10–14 → Moderate depression
15–19 → Moderately severe depression
20–27 → Severe depression
Clinical note: A score of 10 or higher is generally the cutoff for considering clinical intervention.