PHQ-9 depression questionnaire
Depression severity over the past two weeks.
Inputs
CompleteOver the last 2 weeks: little interest or pleasure in doing things
Over the last 2 weeks: feeling down, depressed, or hopeless
Over the last 2 weeks: trouble falling or staying asleep, or sleeping too much
Over the last 2 weeks: feeling tired or having little energy
Over the last 2 weeks: poor appetite or overeating
Over the last 2 weeks: feeling bad about yourself, or that you are a failure or have let yourself or your family down
Over the last 2 weeks: trouble concentrating on things, such as reading or watching television
Over the last 2 weeks: 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
Over the last 2 weeks: thoughts that you would be better off dead, or of hurting yourself
Worked calculation
Your values are highlighted.
- Points
When to use
- Depression screening and monitoring response to treatment.
Pearls and pitfalls
- Any positive answer to item 9 needs same-day suicide risk assessment, regardless of the total.
- A 5-point change is clinically meaningful; remission is below 5.
Why use
Free, brief, and validated.
| Criterion | Points |
|---|---|
| Over the last 2 weeks: little interest or pleasure in doing things: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: feeling down, depressed, or hopeless: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: trouble falling or staying asleep, or sleeping too much: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: feeling tired or having little energy: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: poor appetite or overeating: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: feeling bad about yourself, or that you are a failure or have let yourself or your family down: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: trouble concentrating on things, such as reading or watching television: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: 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: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
| Over the last 2 weeks: thoughts that you would be better off dead, or of hurting yourself: Not at all | 0 |
| Several days | +1 |
| More than half the days | +2 |
| Nearly every day | +3 |
If item 9 is above 0, assess suicide risk now. In the US, call or text 988 for the Suicide and Crisis Lifeline.