PHQ-9 – Patient Depression Questionnaire

Over the last two weeks, how often have you been bothered by the following problems?

Little interest or pleasure in doing things :	Not at allSeveral daysMore than half the daysNearly every day
Feeling down, depressed, or hopeless :	Not at allSeveral daysMore than half the daysNearly every day
Trouble falling or staying asleep, or sleeping too much :	Not at allSeveral daysMore than half the daysNearly every day
Feeling tired or having little energy :	Not at allSeveral daysMore than half the daysNearly every day
Poor appetite or overeating :	Not at allSeveral daysMore than half the daysNearly every day
Feeling bad about yourself or that you are a failure or have let yourself or your family down :	Not at allSeveral daysMore than half the daysNearly every day
Trouble concentrating on things, such as reading the newspaper or watching television :	Not at allSeveral daysMore than half the daysNearly every day
Moving or speaking so slowly that other people could have noticed. Or the opposite being so figety or restless that you have been moving around a lot more than usual :	Not at allSeveral daysMore than half the daysNearly every day
Thoughts that you would be better off dead, or of hurting yourself :	Not at allSeveral daysMore than half the daysNearly every day

Formula :

Points are given for each variable.

Explanation of Result :

1-4 : Minimal depression
5-9 : Mild depression
10-14 : Moderate depression
15-19 : Moderately severe depression
20-27 : Severe depression

* Please verify all calculations prior to clinical use.