It is an integrand of the form OS hazard function with intensities h01, h02, h12 at time point t multiplied with a weighted product of the two OS Survival functions at t (one for intensities h0 and one for h1).

## Arguments

- x
(

`numeric`

)

variable of integration.- h01
(positive

`number`

)

transition hazard for 0 to 1 transition.- h02
(positive

`number`

)

transition hazard for 0 to 2 transition.- h12
(positive

`number`

)

transition hazard for 1 to 2 transition.- h0
(

`list`

)

transition parameters for the first treatment group.- h1
(

`list`

)

transition parameters for the second treatment group.- alpha
(

`number`

)

weight parameter, see`avgHRExpOS()`

.

## Value

This returns the value of the integrand used to calculate
the average hazard ratio for constant transition hazards, see `avgHRExpOS()`

.