Open AccessConstruct Validity and Differential Item Functioning of the PHQ-9 Among Health Care Workers: Rasch Analysis Approach
Author(s) -
Surin Jiraniramai,
Nahathai Wongpakaran,
Chaisiri Angkurawara,
Wichuda Jiraporncharoen
Publication year - 2021
Publication title -
neuropsychiatric disease and treatment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 67
eISSN - 1178-2021
pISSN - 1176-6328
DOI - 10.2147/ndt.s271987
Subject(s) - rasch model , differential item functioning , patient health questionnaire , item response theory , medicine , polytomous rasch model , clinical psychology , construct validity , psychometrics , suicidal ideation , rating scale , psychiatry , psychology , depressive symptoms , poison control , developmental psychology , injury prevention , environmental health , anxiety
The Patient Health Questionnaire (PHQ-9) is a widely used self-report questionnaire to screen depression. Its psychometric property has been tested in many populations including health care workers. We used Rasch measurement theory to examine the psychometric properties of PHQ-9 regarding item difficulty, item fit and the differences between subgroups of respondents classified by sex, age, education and alcohol user status, based on the same overall location of participants.