Figure 2From: Fatigue characteristics in multiple sclerosis: the North American Research Committee on Multiple Sclerosis (NARCOMS) surveyChanges in fatigue rating following a change in IMA. NARCOMS respondents who changed from IFN to GA (n = 766) and from GA to IFN (n = 218). IFN, Interferon β-1a or 1b; GA, glatiramer acetate; IMA, immunomodulatory agents.Back to article page