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Table 2 Algorithm of g-measure indicator function, I(t)

From: Modelling the association between COVID-19 transmissibility and D614G substitution in SARS-CoV-2 spike protein: using the surveillance data in California as an example

input: discretized prevalence time series, p1:T; dominance prevalence threshold, θ (>  0).

initialization: parameter for recoding the zero-prevalence time point, ξ = 1, parameter for recoding excess time point, σ = 0, I1:T = 0.

for t in 1:T do

If pt == 0, set ξ = t.

If (pt ≥ θ & ξ > σ), I(ξ + 1):(t − 1) = 1, σ = t.

end for

output: discretized indicator time series, I1:T.

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Theoretical Biology and Medical Modelling

ISSN: 1742-4682