Fig. 6From: The association of selected multiple sclerosis symptoms with disability and quality of life: a large Danish self-report surveyThe prevalence (A) and intensity (B) of sleep disturbances at each disability level. The figures include data from all participants (n = 2009). NRS-11, numeric rating scale, 0 = no disturbances, 10 = worst imaginable disturbances. NRS-11 categorization: mild (NRS 0–3); moderate (NRS 4–7); and severe (NRS 8–10). PDDS, patient determined disease stepsBack to article page