D
Darshan Mody
Member
Hi,
There are two points I am confused about with regards to the comparison of both these models (Poisson & Two State):
1) "The two-state model can be specified so as to allow for increments (lives entering the poppulation), which is not possible for the poisson model"
I dont understand how does the two state model allow for it ?
2) "The Poisson model assumes that exposed to risk remains constant and estimation of transition rates in the model only involves measurement of the observed no of decrements
WHEREAS the estimation of transition rates in the two-state model involves the measurement of two random variables - the observed no of decrements & the exposed to risk that gave rise to these decrements."
I dont understand how its assumed in poisson model that central exposed to risk is constant?
We actually calculate the central exposed to risk so how is the assumption made that it is constant?
If possible please explain with an example wherever possible.
Thanks!
There are two points I am confused about with regards to the comparison of both these models (Poisson & Two State):
1) "The two-state model can be specified so as to allow for increments (lives entering the poppulation), which is not possible for the poisson model"
I dont understand how does the two state model allow for it ?
2) "The Poisson model assumes that exposed to risk remains constant and estimation of transition rates in the model only involves measurement of the observed no of decrements
WHEREAS the estimation of transition rates in the two-state model involves the measurement of two random variables - the observed no of decrements & the exposed to risk that gave rise to these decrements."
I dont understand how its assumed in poisson model that central exposed to risk is constant?
We actually calculate the central exposed to risk so how is the assumption made that it is constant?
If possible please explain with an example wherever possible.
Thanks!