Psychometric evaluation of the Signs of Depression Scale with a revised scoring mechanism in stroke patients with communicative impairment
Clinical RehabilitationPublished 16 May 2017Open access
Mariska J. van Dijk, Janneke M. de Man‐van Ginkel, Thóra B. Hafsteinsdøttir, Marieke J. Schuurmans
Citations9
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SJR score1.13
SNIP1.57
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TL;DR
The diagnostic value of the original dichotomous SODS is reasonable for the initial mood assessment of stroke patients with communicative impairment, but the Likert scale format does not improve the diagnostic value.
Abstract
OBJECTIVES: To investigate (1) the diagnostic value of the Signs of Depression Scale (SODS) in a Likert scale format and (2) whether the Likert scale improves the diagnostic value compared with the original dichotomous scale. DESIGN: Cross-sectional multicentre study. SETTING: One general and one university hospital in the Netherlands. SUBJECTS: A total of 116 consecutive hospitalized stroke patients, of whom 53 were patients with communicative impairment. MAIN MEASURES: Depression was diagnosed with the Composite International Diagnostic Interview (CIDI) administered to the patients' relatives. The Barthel Index (BI) was used as an external validator. RESULTS: = -0.33) was moderate. For both instruments, the discriminatory power for diagnosing depression when compared with the CIDI was best at a cut-off score of ⩾2. The internal consistency of the SODS-Likert was acceptable (α = 0.69) and slightly higher than that of the SODS (α = 0.57). The inter-rater reliability of the SODS-Likert and the SODS was acceptable (intraclass correlation coefficient (ICC) 0.66 and ICC 0.80, respectively). The clinical utility was rated good. CONCLUSION: The diagnostic value of the SODS did not improve using a Likert scale format. However, the diagnostic value of the original dichotomous SODS is reasonable for the initial mood assessment of stroke patients with communicative impairment.
Keywords
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