Fulltext:
98085.pdf
Embargo:
until further notice
Size:
154.5Kb
Format:
PDF
Description:
Publisher’s version
Publication year
2011Number of pages
7 p.
Source
Journal of Affective Disorders, 129, 1-3, (2011), pp. 229-235ISSN
Annotation
01 maart 2011
Publication type
Article / Letter to editor
Display more detailsDisplay less details
Organization
Primary and Community Care
Psychiatry
Journal title
Journal of Affective Disorders
Volume
vol. 129
Issue
iss. 1-3
Languages used
English (eng)
Page start
p. 229
Page end
p. 235
Subject
NCEBP 7: Effective primary care and public healthAbstract
BACKGROUND: The Patient Health Questionnaire-9 (PHQ-9) has been widely used in research and clinical settings. To be able to attribute differences in PHQ-9 scores between groups with different cultural backgrounds to differences in the level of depression, the instrument has to possess measurement invariance. METHODS: Data from the Apollo-D study were used. We used two strongly contrasting cultural groups (n=1772). Measurement invariance was assessed by comparing four categorical single factor models with an increasing number of restrictions, representing an increasingly stronger measurement invariance assumption. RESULTS: The PHQ-9 was measurement invariant for ethnicity in women and partially measurement invariant for ethnicity in men. The item 'psychomotor problems' seemed to be culturally biased in the Surinam Dutch males. It had a higher loading and threshold compared to Dutch males. LIMITATIONS: The sample is restricted to high risk primary care patients, we did not include a gold standard measure of depression and the analyses pertain to a single cross cultural comparison. CONCLUSIONS: The observed higher total depression score for females in the Surinam Dutch group can be attributed to a true difference in the latent trait depression. For Surinam Dutch and Dutch men some caution is warranted when comparing results obtained with the PHQ-9. In the former group the scores may be biased slightly downward. Future research is needed to examine how the item 'psychomotor problems' performs in different populations. These findings highlight the necessity of establishing measurement invariance before drawing conclusions based on observed scores.
This item appears in the following Collection(s)
- Academic publications [238430]
- Electronic publications [122512]
- Faculty of Medical Sciences [90359]
Upload full text
Use your RU credentials (u/z-number and password) to log in with SURFconext to upload a file for processing by the repository team.