PHQ-9 Depression screening by a nine-item Patient Health Questionnaire

 

Over the last two weeks, how often have you been bothered by any of the following problems?
Little interest or pleasure in doing things
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Feeling down, depressed, or hopeless
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Trouble falling or staying asleep, or sleeping too much
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Feeling tired or having little energy
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Poor appetite or overeating
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Feeling bad about yourself, or that you are a failure, or have let yourself or your family down
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Trouble concentrating on things, such as reading the newspaper or watching television
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
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 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)
Thoughts that you would be better off dead or of hurting yourself in some way
	Not at all (0 points) Several days (1 point) More than half the days (2 points) Nearly every day (3 points)

 
Important: Inputs must be complete to perform calculation.

 

Total Criteria Point Count:
 

 

PHQ-9 score interpretation

 

0 to 4 points:	No depression
5 to 9 points:	Mild depression
10 to 14 points:	Moderate depression
15 to 19 points:	Moderately severe depression
20 to 27 points:	Severe depression

 

Notes

• PHQ-9 is adapted from PRIME MD TODAY, developed by Drs. Robert L Spitzer, Janet BW Williams, Kurt Kroenke, and colleagues, with an educational grant from Pfizer Inc.

 

References

1. Kroenke K, Spitzer RL. The PHQ-9: A new depression and diagnostic severity measure. Psychiatric Annals. 2002; 32:509.
2. Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001 Sep;16(9):606-13.