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. 2022 Aug 15;11(8):1580. doi: 10.3390/antiox11081580

Figure 3.

Figure 3

Stratification of plasma ascorbate in the COVID-19 patients by selected clinical features. To reduce the impact of two samples with plasma ascorbate levels above 100 µM, the measured values are expressed as the natural logarithm (ln). This type of transformation reduces the spread of the data, while also assisting in meeting the assumptions of a statistical inference and improving their interpretation.