Theory and Modern Applications
Parameter | Description |
---|---|
P | Potential smokers |
S | Smokers |
X | Smokers who temporarily quit smoking |
Y | Smokers who permanently quit smoking |
Z | Class of smokers associated with some illness |
α | The recruitment rate of the non-smoking (potential smoking) class from the larger embedding population |
β | The transmission rate of non-smokers into smoking class |
γ | The natural death rate |
δ(1 − η) | The rate at which smokers temporarily quit smoking |
δη | The rate at which smokers permanently quit smoking. It is assumed that 0<η<1 |
ϵ | Developing rate of smoking-related illness of the smokers |
ζ | The rate at which temporarily quit smokers return back to smoking class |
Ï‘ | The additional death rate of the smoking-related illness class |