Fig. 3.

Mosaic plot of patients' demographic and risk factors in association with frequent point mutations along SARS-CoV-2 genome. Rectangular tiles indicate residuals or deviation from a particular test model. Blue tiles mean positive residuals in which the observed frequency is greater than the expected (under independence). Red tiles mean negative residuals in which the observed frequency is less than the expected. The intensity of color reflects the magnitude of the residual. Residuals greater than 2 or less than −2 represent significant deviation from independence. *Significance at p < 0.05. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)