Q: Patient Health Questionnaire-nine (PHQ-9) is a scoring system to determine severity for?
PHQ-9 is a questionnaire to determine the severity of depression. If a patient scores more than 20, it determines severe depression and may warrants ICU admission, particularly if reported with suicidal ideation.
It consists of nine questions, and each question can have a maximum of 3 points, ranging from 0 to 3, depending on severity reported by a patient - not determined by a provider.
The score was developed by Drs. Robert L Spitzer, Janet BW Williams, Kurt Kroenke, and colleagues, with an educational grant from Pfizer, Inc. It has no copyrights and no permission is required to reproduce, translate, display or distribute.
Spitzer RL, Kroenke K, Williams JBW. Patient Health Questionnaire Study Group. Validity and utility of a self-report version of PRIME-MD: the PHQ Primary Care Study. JAMA. 1999;282:1737–44.