期刊
MULTIPLE SCLEROSIS JOURNAL
卷 25, 期 1, 页码 118-121出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1352458518770086
关键词
Multiple sclerosis; depression; cognition
资金
- Multiple Sclerosis Society of Canada
Objective: To determine the mechanism and clinical significance of depression-related differences in performance on the Symbol Digit Modalities Test (SDMT). Methods: The influence of depression on two versions of a computerized SDMT (i.e. fixed versus variable code) was assessed. Both versions involve processing speed, but the fixed c-SDMT also encompasses incidental visual memory. Results: Depression was associated with a 19.06% slowing on the variable (p = 0.002) and an 8.10% slowing on the fixed (p = 0.219) c-SDMT. Conclusion: Depression-associated differences in performance on the SDMT appear linked more to a reduction in processing speed than a decline in incidental visual memory and exceed the 10% threshold considered clinically significant.
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