Figure 2.
PHQ-4 scores of participants over time. Interpretation of PHQ-4 score: 0–2 = no complaints; 3–5 = mild complaints; 6–8 = moderate complaints; 9–12 = severe complaints.15
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.