Patient Health Questionnaire – Depression (PHQ-9)
The PHQ-9 is the nine item depression subscale of the Patient Health Questionnaire, and is a widely used tool for assisting primary care clinicians in diagnosing depression as well as monitoring treatment. The PHQ-9 is based directly on the diagnostic criteria for major depressive disorder in the Diagnostic and Statistical Manual Fourth Edition (DSM-IV).
To establish reliability and validity the PHQ-9 was administered to 6,000 patients in 8 primary care clinics and 7 obstetrics-gynecology clinics, and construct validity and criterion validity were assessed against independent measures (Kroenke, Spitzer and Williams 2001). Criterion validity was assessed against an independent structured mental health professional interview in a sample of 580 patients. The mean PHQ-9 score was 17.1 (SD, 6.1) in the 41 patients diagnosed as having major depression; 10.4 (SD, 5.4) in the 65 patients diagnosed as other depressive disorder; and 3.3 (SD, 3.8) in the 474 patients with no depressive disorder.A PHQ-9 score of more than 10 had a sensitivity of 88% and a specificity of 88% for major depression. PHQ-9 scores of 5, 10, 15, and 20 represented mild, moderate, moderately severe, and severe depression, respectively.
A raw score (from 0 to 27) is presented, as well as a percentile based on sample of non-depressed individuals, a sample of those diagnosed with major depression, and sample diagnosed as having other depressive disorders.An individual with a percentile of around 50 compared to the major depression (MD) sample has a typical level of depression when compared to others diagnosed with major depression. The non-depressed percentile and the other-depressed percentile will be substantially higher. Conversely, an individual who scores in the 50th percentile compared to the non-depressed sample will likely score very low on the two depressed sample subscales.
Drs. Robert L. Spitzer, Janet B.W. Williams, Kurt Kroenke and colleagues.
Try it and see how BetterMind can enhance your practice
Frequently Asked Questions
You’ve got questions, we’ve got answers. Below you can find answers to some of the most frequently asked questions. If you can’t find the answer you’re looking for, please feel free to reach out to us at email@example.com.
I can’t open test results within the Web Browser
Assessment result PDFs are opened in a new tab within the web browser. If you click the results but they do not open, your browser will be blocking the popup. To resolve this, after you have pressed the test result, look out for an alert at the top of your browser notifying you that a pop-up has been blocked, then click "Allow".
I have forgotten my password. How can I reset it?
If you have forgotten your password please press “forgot password” within the app, or on the Web Browser App login page (https://app.bettermind-app.com/login). You will receive a new temporary password via email.
Can a Practitioner access BetterMind from their Smartphone?
No, A Client /Patient can answer assessment questions on a smartphone but the Practitioners/ Users can't administer BetterMind using a Smartphone. A computer, laptop or tablet will have to be used.