0 – 4 > None-minimal
ACTION – None
5 – 9 > Mild
ACTION – Repeat PHQ-9 at follow-up. Ketamine may be helpful.
10 – 14 > Moderate Treatment
ACTION – Considering counseling, follow-up and/or pharmacotherapy. You are likely a candidate for ketamine therapy and a face-to-face consultation.
15 – 19 > Moderately/Severe Treatment
ACTION – Pharmacotherapy and/or psychotherapy
You are likely a candidate for ketamine therapy and a face-to-face consultation.
20 – 27 > Moderately/Severe Treatment
ACTION – Initiation of pharmacotherapy and, if severe impairment or poor response to therapy, expedited referral to a mental health specialist for psychotherapy and/or collaborative management
You are likely a candidate for ketamine therapy and a face-to-face consultation.
Sources
Kroenke K, Spitzer RL, Williams JB. The Patient Health Questionnaire-2: Validity of a Two-Item Depression Screener. Medical Care. 2003;41:1284-92.
Kroenke K, Spitzer RL, Williams JB. The PHQ-9: validity of a brief depression severity measure. J Gen Intern Med. 2001;16:606-13.
Kroenke K, Spitzer RL. The PHQ-9: a new depression diagnostic and severity measure. Psychiatr Ann. 2002;32:509-21.