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. 2022 Feb 27;41(13):2317–2337. doi: 10.1002/sim.9357

TABLE 1.

Variables of interest and their expressions in terms of model compartments as functions of time

Counts of interest Notation (at time t)
Reported active cases
P(t)
Unreported active cases
U(t)+F(t)
Total active cases
P(t)+U(t)+F(t)
Reported cumulative cases
P(t)+RR(t)+DR(t)
Unreported cumulative cases
U(t)+F(t)+RU(t)+DU(t)
Total cumulative cases
P(t)+RR(t)+DR(t)+U(t)+F(t)+RU(t)+DU(t)
Reported deaths
DR(t)
Unreported deaths
DU(t)
Total deaths
DR(t)+DU(t)