Patient Health Questionnaire (PHQ-9)
Major depressive disorder is suggested if:
Other depressive syndrome is suggested if:
Also, PHQ-9 scores can be used to plan and monitor treatment. To score the instrument, tally each response by the number value under the answer headings, (not at all=0, several days=1, more than half the days=2, and nearly everyday=3). Add the numbers together to total the score on the bottom of the questionnaire. Interpret the score by using the guide listed below.