Fig 1.
Data selection flow.
Table 1.
Demographic and disease specific data of people with MS (n = 23 studies).
Table 2.
Overview of included studies.
Table 3.
Relations between SD and psychological and neuropsychological measures.
Table 4.
Treatment effects for SD and psychological measures in intervention studies.
Table 5.
CASP quality assessment for case control studies.
Table 6.
CASP quality assessment for cohort studies.
Table 7.
CASP quality assessment for intervention studies.