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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Otol Neurotol. 2018 Apr;39(4):e269–e273. doi: 10.1097/MAO.0000000000001747

Figure 1.

Figure 1

Mean vitamin D levels for the four age groups after removal of outliers. The number of subjects in each group was: young (20–30 years) = 20, middle aged (50–65 years) = 20, old (66–80 years) = 20 and oldest old (81–95 years) = 19. Error bars represent standard error of the mean (SEM).