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. 2021 Jan 21;11:1866. doi: 10.1038/s41598-021-81460-9

Table 1.

Parameter values assumed in the simulation experiments.

Parameter Symbol Value
Initial population P0 1,000,000
Initial fractional population growth rate g0 0
Fractional rate of decrease in the population growth rate δg 0
Initial number of less dependent smokers L0 40,000
Initial number of heavily dependent smokers H0 60,000
Initial number of former smokers F0 150,000
Per capita mortality rate for less dependent smokers μ 0.02
Mortality rate ratio for heavily dependent smokers ζ 1.5
Mortality rate ratio for former smokers η 0.5
Cessation rate ratio for heavily dependent smokers λ 0.4
Initial per capita initiation rate u0 0.01
Initial per capita rate of progression to heavily dependent smoking v0 0.2
Initial per capita cessation rate for less dependent smokers c0 0.4
Initial per capita relapse rate r0 0.2
Fractional rate of increase in the per capita initiation rate δu 0
Fractional rate of increase in the per capita rate of progression to heavily dependent smoking δv 0
Fractional rate of increase in the per capita cessation rate for less dependent smokers δc 0
Fractional rate of increase in the per capita relapse rate δr 0