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Figure

Figure. 25-Hydroxyvitamin D levels are lower in African Americans with multiple sclerosis than controls. From: Vitamin D in African Americans with multiple sclerosis.

Levels of 25-hydroxyvitamin D (deseasonalized) were lower in African Americans with multiple sclerosis than controls in this cross-sectional dataset (p = 0.0013). The box plot indicates the median and interquartile range, the whiskers designate 1.5 times the interquartile distance, and the dots denote outlying values. The p value was calculated by the Wilcoxon rank sum test.

J.M. Gelfand, et al. Neurology. 2011 May 24;76(21):1824-1830.

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