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. 2023 Jul 13;3:97. doi: 10.1038/s43856-023-00328-3

Table 3.

Relationships between possible predictors of the effective reproductive number of the most predominant variants of COVID-19.

Lineage Mobility Stringency index Vaccinated Mask use Cases
B.1.1 0.03 (0.05) −0.003 (0.39) NA −0.01 (0.64) −0.01 (0.92)
B.1.111 −0.01 (0.63) 0.4 (1.1e−08)* NA 0.53 (3.22e−12)* −0.008 (0.49)
B.1.1.348 0.01 (0.15) −0.01 (0.70) NA 0.2 (8.88e−05)* 0.28 (1.98e−05)*
B.1.420 0.20 (0.04)* −0.02 (0.44) NA −0.04 (0.56) 0.53 (0.0007)*
B.1.617 (Delta) 0.54 (<2.2e−11)* 0.40 (<3.82e−08)* 0.36 (<2.62e−05)* 0.47 (<1.67e−09)* −0.01 (0.91)
P.1 (Gamma) 0.51 (8.17e−09)* 0.50 (1.33e−08)* 0.57 (2.44e−09)* 0.50 (1.5e−08)* 0.09 (0.02)*
B.1.1.7 (Alpha) −0.001 (0.33) −0.01 (0.51) −0.02 (0.54) 0.25 (0.002)* 0.15 (0.01)*
B.1.621 (Mu) 0.49 (2.21e−08)* 0.25 (0.0001)* 0.49 (1.80e−08)* 0.46 (8.92e−08)* 0.01 (0.21)
C.37 (Lambda) −0.04 (0.84) 0.03 (0.21) 0.62 (0.0002)* 0.15 (0.03)* 0.75 (1.002e−07)*
Omicron 0.1 (0.14) 0.48 (0.006)* 0.39 (0.017)* 0.16 (0.101)* 0.79 (5.89e−05)*

We tested five predictors using a linear regression between a response variable (Re of each variant) and one variable or predictor (explanatory variables). The values in the table show the adjusted R-squared and (p-value). *: statistically significant. NA means that the variable was not recorded for all period of time that a particular variant circulated.