Pfizer grants you permission to download and use the PHQ, PHQ-9 and their related translations as available on this web site so long as you agree to the following terms of use:
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You will not translate the PHQ, PHQ-9, or any parts of the PHQ or PHQ-9 without first seeking permission from Pfizer.
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You will not modify or otherwise adapt the PHQ or PHQ-9 without permission.
Exceptions:
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Only Question 9 of the PHQ-9 (Thought that you would be better off dead or of hurting yourself in some way) can be eliminated, if so desired. |
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The first two questions of the PHQ-9 (Questions 1 & 2), sometimes referred to as the PHQ-2, can be used without the remaining 7 questions. |
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Incorporation of the PHQ and PHQ-9 into electronic medical records is permitted. |
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The PHQ and PHQ-9 shall remain unbranded, with only the distributor’s name included (if needed) in the same font size as the Pfizer copyright statement.
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You will not sell or incorporate the PHQ or PHQ-9 into materials that could be sold. Exception: Incorporation into educational materials such as books and journals can be done with proper citation (see #5 below).
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You will include Pfizer's copyright ownership statement and authors’ names on all copies of the PHQ and PHQ-9 as it appears on the document that you are downloading from this web site.
Should you desire to use the PHQ, Brief PHQ or PHQ-9 in a manner not permitted under the terms of use of this web site, please contact Pfizer at: RequestforPermissions@Pfizer.com
PFIZER MAKES NO WARRANTIES OR REPRESENTATIONS OF ANY KIND AS TO THE ACCURACY, CURRENCY, OR COMPLETENESS OF THE INFORMATION ACCESSED AND USED THROUGH THIS WEB SITE. YOU AGREE THAT ACCESS TO AND USE OF THE PHQ-9 IS AT YOUR OWN RISK. PFIZER DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NEITHER PFIZER NOR ANY PARTY INVOLVED IN CREATING, PRODUCING, OR DELIVERING THE PHQ-9 SHALL BE LIABLE FOR ANY DAMAGES, INCLUDING WITHOUT LIMITATION, DIRECT, INCIDENTAL, CONSEQUENTIAL, INDIRECT, OR PUNITIVE DAMAGES, ARISING OUT OF ACCESS TO, USE OF OR INABILITY TO USE THE PHQ-9, OR ANY ERRORS OR OMISSIONS IN THE CONTENT THEREOF. THIS LIMITATION INCLUDES DAMAGES TO, OR FOR ANY VIRUSES THAT INFECT, YOUR COMPUTER EQUIPMENT.
Since the questionnaire relies on patient self-report, all responses should be verified by the clinician and a definitive diagnosis made on clinical grounds, taking into account how well the patient understood the questionnaire, as well as other relevant information from the patient. Diagnoses of Major Depressive Disorder or Other Depressive Disorder also require impairment of social, occupational, or other important areas of functioning (Question #10) and ruling out normal bereavement, a history of a Manic Episode (Bipolar Disorder), and a physical disorder, medication, or other drug as the biological cause of the depressive symptoms.
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