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. 2015 Nov 23;10(11):e0141385. doi: 10.1371/journal.pone.0141385

Table 2. Summary of PHQ-9 components.

Interest or pleasure in activity
Feeling down, depressed, or hopeless
Trouble falling or staying asleep or sleeping too much
Feeling tired or having little energy
Poor appetite or overheating
Feeling bad about yourself or low self-esteem
Trouble concentrating on reading, recreation or work
Talking to yourself or restlessness
Suicidal ideation or self-harm