Psychiatry · Primary Care · Internal Medicine

PHQ-9 (Patient Health Questionnaire-9) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Little interest or pleasure in doing things

Feeling down, depressed, or hopeless

Trouble falling or staying asleep, or sleeping too much

Feeling tired or having little energy

Poor appetite or overeating

Feeling bad about yourself — or that you are a failure or have let yourself or your family down

Trouble concentrating on things, such as reading the newspaper or watching television

Moving or speaking so slowly that other people could have noticed; or the opposite — being so fidgety or restless that you have been moving around a lot more than usual

Thoughts that you would be better off dead, or of hurting yourself in some way

Result

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Clinical inputs

Little interest or pleasure in doing things
Feeling down, depressed, or hopeless
Trouble falling or staying asleep, or sleeping too much
Feeling tired or having little energy
Poor appetite or overeating
Feeling bad about yourself — or that you are a failure or have let yourself or your family down
Trouble concentrating on things, such as reading the newspaper or watching television
Moving or speaking so slowly that other people could have noticed; or the opposite — being so fidgety or restless that you have been moving around a lot more than usual
Thoughts that you would be better off dead, or of hurting yourself in some way

Primary source

Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. DOI: 10.1046/j.1525-1497.2001.016009606.x. PMID: 11556941. Scope: nine DSM-IV depression items scored 0–3 (not at all to nearly every day); total 0–27 with severity bands at 5/10/15/20; score ≥10 often used as screening threshold. (2001)

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