Mathematical Modeling and Analysis of Khat-Chewing Dynamics

Table 1

Parameters and their descriptions.

No.	Parameters	Description
1	ϵ	Natural birth rate
2		Natural death rate
3		Rate of conversion from non-Khat chewer to the exposed group
4		Rate of conversion from the exposed group to Khat chewer
5		Rate of return back from Khat chewer to exposed because of socio-economic, environmental, and religious factors
6		Rate of removal from Khat chewing to temporary Khat chewers and regular Khat chewers.
7		Rate of return back from temporarily Khat chewers to the Khat chewers group
8		The probability of conversion from Khat chewing to temporarily Khat chewers
9		The probability of conversion from Khat chewing to regular Khat chewers.
10		Rate of conversion from temporarily chewers to permanent chewers
11		Khat-chewing induced disease death rate