Validation of the PHQ-9 in a psychiatric sample

Journal of Affective Disorders
C BeardThrostur Bjorgvinsson

Abstract

The PHQ-9 was originally developed as a screener for depression in primary care and is commonly used in medical settings. However, surprisingly little is known about its psychometric properties and utility as a severity measure in psychiatric populations. We examined the full range of psychometric properties of the PHQ-9 in patients with a range of psychiatric disorders (i.e., mood, anxiety, personality, psychotic). Patients (n=1023) completed the PHQ-9 upon admission and discharge from a partial hospital, as well as other self-report measures of depression, anxiety, well-being, and a structured diagnostic interview. Internal consistency was good (α=.87). The PHQ-9 demonstrated a strong correlation with a well-established measure of depression, moderate correlations with related constructs, a weak correlation with a theoretically unrelated construct (i.e., disgust sensitivity), and good sensitivity to change, with a large pre- to post-treatment effect size. Using a cut-off of ≥13, the PHQ-9 demonstrated good sensitivity (.83) and specificity (.72). A split-half exploratory factor analysis/confirmatory factor analysis suggested a two-factor solution with one factor capturing cognitive and affective symptoms and a second factor r...Continue Reading

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Citations

Jun 18, 2016·Journal of Affective Disorders·Alison E J MahoneyGavin Andrews
Oct 16, 2016·Journal of Affective Disorders·Courtney BeardThröstur Björgvinsson
Mar 20, 2018·Behavioural and Cognitive Psychotherapy·Alison E J MahoneyGavin Andrews
Mar 31, 2018·Journal of Health Psychology·Renzo BianchiEric Mayor
Aug 29, 2017·Canadian Journal of Psychiatry. Revue Canadienne De Psychiatrie·R Nicholas CarletonGordon J G Asmundson
Jan 30, 2018·Frontiers in Psychology·Renzo BianchiJesús F Salgado
Nov 16, 2017·Journal of Health Psychology·Renzo Bianchi, Romain Brisson
Jun 16, 2018·Journal of the American Association of Nurse Practitioners·Patrick O'Byrne, Jean Daniel Jacob
Oct 15, 2018·Journal of Personality·Marie ForgeardThröstur Björgvinsson
Feb 23, 2019·Cognitive Behaviour Therapy·R Nicholas CarletonRonald D Camp
Sep 15, 2016·Psychological Medicine·C BeardT Björgvinsson
Jul 31, 2019·Journal of Personality Assessment·Melissa R GarabilesBrian J Hall
Sep 3, 2019·Stress and Health : Journal of the International Society for the Investigation of Stress·Renzo Bianchi, Daniel da Silva Nogueira
Jul 10, 2019·Scandinavian Journal of Primary Health Care·Jari JokelainenKadri Suija
Mar 11, 2020·Occupational Medicine·P M Di NotaD Groll
Mar 29, 2020·International Journal of Environmental Research and Public Health·R Nicholas CarletonTracie O Afifi
Aug 2, 2017·Behavioural and Cognitive Psychotherapy·Alison E J MahoneyGavin Andrews
Apr 11, 2019·International Journal of Environmental Research and Public Health·Xiaohua YeYanjun Xu
Aug 28, 2020·Frontiers in Psychiatry·Barbara ScolnickThomas Hildebrandt
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