scholarly journals Item Response Patterns on the Patient Health Questionnaire-8 in a Nationally Representative Sample of US Adults

2017 ◽  
Vol 8 ◽  
Author(s):  
Shinichiro Tomitaka ◽  
Yohei Kawasaki ◽  
Kazuki Ide ◽  
Maiko Akutagawa ◽  
Hiroshi Yamada ◽  
...  
Keyword(s):  
Item Response ◽  
Representative Sample ◽  
Patient Health Questionnaire ◽  
Response Patterns ◽  
Health Questionnaire ◽  
Patient Health ◽  
Nationally Representative

scholarly journals Evaluation of the Brazilian version of Patient Health Questionnaire (PHQ-9) in Quilombola population using the Item Response Theory

Salud Mental ◽  
2019 ◽  
Vol 42 (1) ◽  
pp. 43-50
Author(s):  
Sabrina Martins Barroso ◽  
Ana Paula Souto Melo ◽  
Mônia Aparecida da Silva ◽  
Mark Drew Crosland Guimarães
Keyword(s):  
Item Response Theory ◽  
Rural Communities ◽  
Psychometric Properties ◽  
Item Response ◽  
Screening Tools ◽  
Patient Health Questionnaire ◽  
Health Questionnaire ◽  
Response Theory ◽  
Patient Health ◽  
Depressive Episodes

Introduction. The Patient Health Questionnaire (PHQ-9) is one of the most validated tools used to detect depressive episodes in Brazil. Objective. This study investigates the psychometric properties of the PHQ-9 using the Item Response Theory. Method. We used the gradual response model to assess depression in 764 residents of Brazilian rural communities of descended from slaves (quilombos) from the county of Vitória da Conquista, state of Bahia, Brazil, who had responded to PHQ-9. We estimated the parameters for item discrimination and difficulty. Results. The items of the PHQ-9 showed the ability to discriminate from moderate to very high. The items evaluating thoughts of hurting oneself and death showed the greatest discrimination while feeling depressed showed the lowest discrimination. Discussion and conclusion. The Item Response Theory enables advances in the analysis of the psychometric properties of the screening tools assessing depression, and indicates that PHQ-9 can be used in rural populations in Brazil.

Measurement invariance of the Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder (GAD-7) across four European countries during the COVID-19 pandemic

2021 ◽  
Author(s):  
Mark Shevlin ◽  
Sarah Butter ◽  
Orla McBride ◽  
Jamie Murphy ◽  
Jilly Gibson Miller ◽  
...  
Keyword(s):  
Anxiety Disorder ◽  
Generalized Anxiety Disorder ◽  
Latent Variable ◽  
Self Report ◽  
Patient Health Questionnaire ◽  
Generalized Anxiety ◽  
Health Questionnaire ◽  
Patient Health ◽  
Nationally Representative ◽  
The Uk

Objective: The Patient Health Questionnaire (PHQ-9) and Generalized Anxiety Disorder scale (GAD-7) are self-report measures of major depressive disorder and generalised anxiety disorder. The primary aim of this study was to test for differential item functioning (DIF) on the PHQ-9 and GAD-7 items based on age, sex (males and females), and country.Method (or Design): Data from nationally representative surveys in UK, Ireland, Spain, and Italy (combined N = 6, 040) were used to fit confirmatory factor analytic and multiple-indictor multiple-causes models.Results: Spain and Italy had higher latent variable means than the UK and Ireland for both anxiety and depression, but there was no evidence for differential items functioning.Conclusions: The PHQ-9 and GAD-7 scores were found to be unidimensional, reliable, and largely free of DIF in data from four large nationally representative samples of the general population in the UK, Ireland, Italy and Spain.

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