Abstract
Background
The 11th version of the International Classification of Diseases (ICD-11) included revised formulations of single episode depressive disorder (DD) and generalized anxiety disorder (GAD). Consequently, the International Depression Questionnaire (IDQ) and International Anxiety Questionnaire (IAQ) have been developed as self-report measures which directly align with the ICD-11 description of DD and GAD, respectively.
Objective
The current study sought to (1) test the factorial validity of the Turkish translations of the IDQ and IAQ, (2) evaluate their internal reliability, (3) determine how meeting diagnostic requirements for ICD-11 DD and ICD-11 GAD vary across different demographic variables, and (4) determine the convergent validity of the Turkish translations of the IDQ and IAQ.
Methods
Participants were a community sample of 1455 Turkish adults and largely comprised of university students. This study used confirmatory factor analysis (CFA) to test the latent structure of both scales. Prevalence rates of ICD-11 GAD and DD were also estimated, and differences in prevalence rates according to gender and relationship status were examined.
Results
The CFA results indicated that both scales were unidimensional. Both scales demonstrated high levels of internal consistency. The prevalence of ICD-11 DD and GAD was 26.6% and 28.5%, respectively. Rates of probable ICD-11 DD and GAD were highest for females and single participants. Convergent validity was indicated by strong associations with external measures of depression and anxiety.
Conclusion
Findings from this study provide support for the validity and reliability of the Turkish versions of the IDQ and IAQ in a large community sample.
The 11th version of the International Classification of Diseases (ICD-11) included revised formulations of single episode depressive disorder (DD) and generalized anxiety disorder (GAD). Consequently, the International Depression Questionnaire (IDQ) and International Anxiety Questionnaire (IAQ) have been developed as self-report measures which directly align with the ICD-11 description of DD and GAD, respectively.
Objective
The current study sought to (1) test the factorial validity of the Turkish translations of the IDQ and IAQ, (2) evaluate their internal reliability, (3) determine how meeting diagnostic requirements for ICD-11 DD and ICD-11 GAD vary across different demographic variables, and (4) determine the convergent validity of the Turkish translations of the IDQ and IAQ.
Methods
Participants were a community sample of 1455 Turkish adults and largely comprised of university students. This study used confirmatory factor analysis (CFA) to test the latent structure of both scales. Prevalence rates of ICD-11 GAD and DD were also estimated, and differences in prevalence rates according to gender and relationship status were examined.
Results
The CFA results indicated that both scales were unidimensional. Both scales demonstrated high levels of internal consistency. The prevalence of ICD-11 DD and GAD was 26.6% and 28.5%, respectively. Rates of probable ICD-11 DD and GAD were highest for females and single participants. Convergent validity was indicated by strong associations with external measures of depression and anxiety.
Conclusion
Findings from this study provide support for the validity and reliability of the Turkish versions of the IDQ and IAQ in a large community sample.
| Original language | English |
|---|---|
| Article number | 103988 |
| Pages (from-to) | 1-6 |
| Number of pages | 6 |
| Journal | Acta Psychologica |
| Volume | 238 |
| Early online date | 14 Jul 2023 |
| DOIs | |
| Publication status | Published (in print/issue) - 31 Aug 2023 |
Bibliographical note
Publisher Copyright:© 2023
Keywords
- single episode depressive disorder; generalized anxiety disorder; validation; prevalence.
- Validation
- Prevalence
- Generalized anxiety disorder
- Single episode depressive disorder
