10.116. Patient Health Questionnaire 8-item depression scale (PHQ-8)

10.116.1. History and guide

The PHQ-8 is the PHQ-9 with the final question, about suicidal or self-injurious thoughts, omitted (Kroenke et al. 2009, p165). It was omitted for situations in which interviewers/data collectors are not able to provide adequate intervention (Kroenke et al. 2009, p165). However, the omitted question is “by far the least frequently endorsed” and the scoring is the same as for the PHQ-9 (Kroenke et al. 2009, p165). The final prompt, about daily functioning, is also omitted (Kroenke et al. 2009, p171).

A score of ≥10 is the standard cutoff for likely major depressive disorder (MDD); this is the same cutoff as the PHQ-9 (Kroenke et al. 2010). A score of ≥10 has an 88% sensitivity and 88% specificity for major depression (Kroenke & Spitzer 2002, via Kroenke et al. 2009).

10.116.2. Source

See PHQ-9, and Kroenke (2009) as above.

10.116.3. Intellectual property rights

Public domain. See PHQ-9.