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Psychometric properties of the Quick Inventory of Depressive Symptomatology (QIDS-SR) in UK primary care
Abstract
It is widely believed that severity of depressive disorder should guide treatment selection and many guidelines emphasise this factor. The Quick Inventory of Depressive Symptomatology (QID-SR16) is a self-complete measure of depression severity which includes all DSM-IV criterion symptoms for major depressive disorder. The object of this study was to assess the psychometric properties of the QIDS-SR16 in a primary care sample. Adult primary care patients completed the QIDS-SR16 and were assessed by a psychiatrist (blind to QIDS-SR16) with the 17-item Hamilton Rating Scale for Depression (GRID-HAMD). Internal consistency, homogeneity and convergent and discriminant validity of the QIDS-SR16 were assessed. Severity cut-off scores for QIDS-SR16 were assessed for convergence with HRSD-17 cut-offs. Published methods for converting scores to HRSD-17 were also assessed. Two hundred and eighty-six patients participated: mean age = 49.5 (s.d. = 13.8), 68% female, mean HRSD-17 = 12.6 (s.d. = 7.6). The QIDS-SR16 exhibited acceptable internal consistency (Cronbach's alpha = 0.86), a robust factor structure indicating one underlying dimension and correlated highly with the HRSD-17 (r = 0.79) but differed significantly in how it categorised the severity of depression relative to the HRSD-17 (Wilcoxon Signed Rank Test p < 0.001). Using published methods to convert QIDS-SR16 scores to HRSD-17 scores did not result in alignment of severity categorisation. In conclusion, psychometric properties of the QIDS-SR16 were found to be strong in terms of internal consistency, factor structure and convergent and discriminant validity. Using conventional scoring and conversion methods the scale was found not to concur with the HRSD-17 in categorising the severity of depressive symptoms.
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The QIDS-SR16 has shown good internal consistency (α = 0.86), as well as convergent and discriminant validity.
“The QIDS-SR16 has also shown good internal consistency (α = 0.86), as well as convergent and discriminant validity [20, 23].”
From Antidepressant side effects and their impact on treatment outcome in people with major depressive disorder: an iSPOT-D report (2021) · cites this paper as [23]
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Metadata
- Authors
- Cameron, I. M., Crawford, J. R., Cardy, A. H., du Toit, S. W., Lawton, K., Hay, S., Mitchell, K., Sharma, S., Shivaprasad, S., Winning, S., & Reid, I. C.
- Affiliations
- University of Aberdeen (GB)
- Royal Cornhill Hospital (GB)
- Corresponding author
- Cameron, Isobel M.
- Venue
- Journal of Psychiatric Research
- Publisher
- Elsevier BV
- Published
- 2013-05
- Volume
- 47
- Issue
- 5
- Pages
- 592-598
- ISSN
- 0022-3956 (ISSN-L)
- OpenAlex
- W2091090666
- Cited by
- 42
- References
- 36
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 4 · 2021: 2 · 2020: 1 · 2019: 3 · 2018: 1 · 2017: 3 · 2016: 2 · 2015: 4 · 2014: 3
- FWCI
- 4.06
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Psychiatric Research (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Division of Materials Research
- Topics
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Anxiety, Depression, Psychometrics, Treatment, Cognitive Processes
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Health Sciences › Medicine › Pharmacology (medical) › Treatment of Major Depression
- Keywords
- QIDS-SR16, depression severity, psychometric properties, primary care, Hamilton Depression Rating Scale, score conversion, factor structure, convergent validity, discriminant validity, internal consistency
- MeSH terms
- Adult, Depressive Disorder, Factor Analysis, Statistical, Female, United Kingdom, Humans, Male, Middle Aged, Primary Health Care, Psychiatric Status Rating Scales, Psychometrics, Retrospective Studies, Reproducibility of Results, Statistics, Nonparametric, Self Report
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