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Fig. 2 | BMC Neurology

Fig. 2

From: Sleep quality, daytime sleepiness, fatigue, and quality of life in patients with multiple sclerosis treated with interferon beta-1b: results from a prospective observational cohort study

Fig. 2

Direction and strength of correlations between questionnaire results for primary and secondary outcome variables at the beginning of the study. PSQI Pittsburgh Sleep Quality Index, MFIS Modified Fatigue Impact Scale, SF-36 Short Form 36, PCS physical component score, MCS mental component score, ESS Epworth Sleepiness Scale, HADS-D Hospital Anxiety and Depression Scale Depression Subscale, HADS-A Hospital Anxiety and Depression Scale Anxiety Subscale

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