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. 2021 Jan 25;9(2):245. doi: 10.3390/microorganisms9020245

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Pairwise correlational analysis of the assay numerical values obtained by each automated assay. Correlation plots of each automated assay with the sVNT. Pearson correlation coefficient (r) and p-value are indicated. Pearson’s r of 0–0.19 is regarded as very weak, 0.2–0.39 as weak, 0.40–0.59 as moderate, 0.6–0.79 as strong and 0.8–1 as very strong correlation, but these are rather arbitrary limits, and the context of the results should be considered. Data are presented for 111 RT-PCR confirmed SARS-CoV-2 positive samples and 127 known negative samples, run on each automated assay; VIDAS^®3, CL-900i^® SARS-CoV-2, and LIAISON^®XL.