TY - JOUR
T1 - Psychometric and Clinical Evaluation of the Clinician (VQIDS-C5) and Self-Report (VQIDS-SR5) Versions of the Very Quick Inventory of Depressive Symptoms
AU - Rush, A. John
AU - Madia, Nancy D.
AU - Carmody, Thomas
AU - Trivedi, Madhukar H.
N1 - Funding Information:
The STAR*D trial was funded by NIMH under contract N01 MH-90003 to the University of Texas Southwestern Medical Center at Dallas. Forest Pharmaceuticals, GlaxoSmithKline, Organon, and Wyeth Pharmaceuticals provided medications for this trial at no cost. This work was also supported in part through the Hersh Foundation (Principal investigator, M.H. Trivedi) and the Center for Depression Research and Clinical Care (P.I.: Trivedi).
Publisher Copyright:
© 2022 Rush et al.
PY - 2022
Y1 - 2022
N2 - Purpose: Evaluate the psychometric properties of the 5-item Very Quick Inventory of Depressive Symptomatology self-report and clinician-rated versions (VQIDS-SR5 /VQIDS-C5), compare their relative performance, create crosswalks between their total scores and other accepted depressive symptom ratings, and define clinically relevant depressive symptom severity thresholds and categorical outcomes for both versions. Patients and Methods: The Sequenced Treatment Alternatives to Relieve Depression trial obtained baseline and exit 17-item Hamilton Rating Scale for Depression (HRSD17) and 30-item Inventory of Depressive Symptomatology – Clinician-rated scores, and baseline and visit-wise QIDS-SR16 and QIDS-C16 ratings from the first treatment step (citalopram). The VQIDS-C5 and the VQIDS-SR5 items (sad mood, self-outlook, involvement, fatigue, psychomotor slowing) (each rated 0–3), extracted from the corresponding 16-item ratings, were selected to best reflect the 6-item HRSD (HRSD6) (exclusive of anxiety). Classical Test Theory (CTT) and Item-Response Theory (IRT) analyses assessed psychometric features. IRT analyses produced total score crosswalks between the VQIDS5, QIDS-C16, QIDS-SR16 and HRSD6. Clinically relevant VQIDS symptom severity thresholds and treatment outcomes were estimated based on cross-walks from the parent QIDS16 ratings. Results: Both VQIDS versions were unifactorial with acceptable internal consistencies (Cronbach’s alphas >0.80), item-total correlations (0.57–0.74) by CCT, and strong IRT item performance. Based on QIDS16 severity thresholds (none 0–5; mild 6–10; moderate 11–15; severe 16–20; and very severe 21–27), comparable thresholds were 0–2; 3–5; 6–9; 9–12; and >12 for VQIDS-C5, and 0–2; 2–5; 6–8; 9–12; and >12 for VQIDS-SR5. Kappa values were acceptable in comparing categories of outcomes (eg, no benefit, remission, etc) based on VQIDS and corresponding QIDS categories. Conclusion: The VQIDS-C5 and VQIDS-SR5 assess selected core depressive symptoms with psychometrically acceptable properties. Theelf-report and clinician-rated versions provide virtually identical information, symptom severity thresholds and symptom change categories. Both are as sensitive to change as the corresponding QIDS16, making them suitable for use in busy practices.
AB - Purpose: Evaluate the psychometric properties of the 5-item Very Quick Inventory of Depressive Symptomatology self-report and clinician-rated versions (VQIDS-SR5 /VQIDS-C5), compare their relative performance, create crosswalks between their total scores and other accepted depressive symptom ratings, and define clinically relevant depressive symptom severity thresholds and categorical outcomes for both versions. Patients and Methods: The Sequenced Treatment Alternatives to Relieve Depression trial obtained baseline and exit 17-item Hamilton Rating Scale for Depression (HRSD17) and 30-item Inventory of Depressive Symptomatology – Clinician-rated scores, and baseline and visit-wise QIDS-SR16 and QIDS-C16 ratings from the first treatment step (citalopram). The VQIDS-C5 and the VQIDS-SR5 items (sad mood, self-outlook, involvement, fatigue, psychomotor slowing) (each rated 0–3), extracted from the corresponding 16-item ratings, were selected to best reflect the 6-item HRSD (HRSD6) (exclusive of anxiety). Classical Test Theory (CTT) and Item-Response Theory (IRT) analyses assessed psychometric features. IRT analyses produced total score crosswalks between the VQIDS5, QIDS-C16, QIDS-SR16 and HRSD6. Clinically relevant VQIDS symptom severity thresholds and treatment outcomes were estimated based on cross-walks from the parent QIDS16 ratings. Results: Both VQIDS versions were unifactorial with acceptable internal consistencies (Cronbach’s alphas >0.80), item-total correlations (0.57–0.74) by CCT, and strong IRT item performance. Based on QIDS16 severity thresholds (none 0–5; mild 6–10; moderate 11–15; severe 16–20; and very severe 21–27), comparable thresholds were 0–2; 3–5; 6–9; 9–12; and >12 for VQIDS-C5, and 0–2; 2–5; 6–8; 9–12; and >12 for VQIDS-SR5. Kappa values were acceptable in comparing categories of outcomes (eg, no benefit, remission, etc) based on VQIDS and corresponding QIDS categories. Conclusion: The VQIDS-C5 and VQIDS-SR5 assess selected core depressive symptoms with psychometrically acceptable properties. Theelf-report and clinician-rated versions provide virtually identical information, symptom severity thresholds and symptom change categories. Both are as sensitive to change as the corresponding QIDS16, making them suitable for use in busy practices.
KW - Depression
KW - Psychometrics
KW - QIDS
KW - Rating scales
KW - Self-report
KW - Symptoms
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U2 - 10.2147/NDT.S342457
DO - 10.2147/NDT.S342457
M3 - Article
C2 - 35210776
AN - SCOPUS:85125109610
SN - 1176-6328
VL - 18
SP - 289
EP - 302
JO - Neuropsychiatric Disease and Treatment
JF - Neuropsychiatric Disease and Treatment
ER -