Validation of the functional assessment of chronic illness therapy - General treatment satisfaction (FACIT-TS-G) in multiple sclerosis.

•Valid assessment of treatment satisfaction is critical in the care of multiple sclerosis (MS).•Our results suggest the Functional Assessment of Chronic Illness Therapy – General Treatment Satisfaction (FACIT-TS-G) is a reliable and valid measure of patient-reported treatment satisfaction in MS.•These results also suggest infusible disease modifying treatments (DMTs) for MS are associated with greater treatment satisfaction compared to DMTs with oral or injection administration.