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Table 6 Description of parameters in the dynamical system model

From: The association between macronutrient intakes and coronavirus disease 2019 (COVID-19) in an Iranian population: applying a dynamical system model

Parameters

Interpretation

Cholesterol

Starch

Fiber

PUFA

Total sugar

Source

\(\mathrm{\alpha }\)

Rate of transmission from S to E1

0.51

0.32

0.32

0.79

0.54

Data

\(1-\mathrm{\alpha }\)

Rate of transmission from S to E2

0.48

0.68

0.68

0.21

0.45

Data

\(m\)

The rate of death in susceptible individuals, E1, E2 and I2

0.045

0.045

0.045

0.045

0.045

Estimate

\({\gamma }_{1}\)

Rate of transmission from E1 to I1

0.094

0.07

0.031

0.13

0.06

Data

\({\gamma }_{2}\)

Rate of transmission from E1 to I2

0.74

0.54

0.22

0.86

0.48

Data

\({\gamma }_{3}\)

Rate of transmission from E2 to I1

0.0176

0.04

0.082

0.72

0.054

Data

\({\gamma }_{4}\)

Rate of transmission from E2 to I2

0.0137

0.33

0.66

0.27

0.0.39

Data

\({\beta }_{1}\)

Rate of transmission from I1 to H

0.006

0.005

0.05

0.006

0.005

Data

\({\beta }_{2}\)

Rate of transmission from I1 to OU

0.1069

0.106

0.107

0.09

0.106

Data

\({\beta }_{3}\)

Rate of transmission from I2 to OU

0.877

0.87

0.88

0.88

0.87

Data

  1. α: Rate of transmission from S to E1, 1−α: Rate of transmission from S to E2, m: rate of death in susceptible individuals, \({\gamma }_{1}\): Rate of transmission from E1 to I1,\({\gamma }_{2}:\) Rate of transmission from E1 to I2, \({\gamma }_{3}\): Rate of transmission from E2 to I1, \({\gamma }_{4}:\) Rate of transmission from E2 to I2,\({\beta }_{1}:\) Rate of transmission from I1 to H, \({\beta }_{2}\): Rate of transmission from I1 to OU, \({\beta }_{3}:\) Rate of transmission from I2 to OU