Description Fields See Also Examples

The variance of the Incremental Net Monetary Benefit may also be calculated in a hypothetical situation when the standard deviation of costs and effectiveness in each group differ.

`sdc_ref`

: standard deviation of costs in the reference group

`sdc_exp`

: standard deviation of costs in the experimental group

`sde_exp`

: standard deviation of effectiveness in the experimental group

`sde_ref`

: standard deviation of effectiveness in the reference group

`rho`

: coefficient of correlation between the difference in costs (dc) and the difference in effectiveness (de)

`object_lambda`

: object containing the ceiling cost-effectiveness ratio or maximum acceptable cost of a unit of effectiveness. See create_object_lambda

create_object_var_inmb_direct to directly provide a value for the variance of the Incremental Net Monetary Benefit

create_object_var_inmb to calculate the theoretical standard deviation of the expected INB with the same standard deviation in the reference and the experimental group

create_object_var_inmb_diff the constructor

- set_sdc_ref(sdc_ref):
sets the standard deviation of costs in the reference group of this VAR_INMB_DIFF object

- set_sdc_exp(sdc_exp):
sets the standard deviation of costs in the experimental group of this VAR_INMB_DIFF object

- set_sde_exp(sde_exp):
sets the standard deviation of effectiveness in the experimental group of this VAR_INMB_DIFF object

- set_sde_ref(sde_ref):
sets the standard deviation of effectiveness in the reference group of this VAR_INMB_DIFF object

- set_rho(rho):
Sets the coefficient of correlation between the difference in costs (dc) and the difference in effectiveness (de) of this VAR_INMB_DIFF object

- set_lambda(lambda):
sets the lambda value of this VAR_INMB_DIFF object

- get_var_inmb():
Return the calculated variance of the Incremental Net Monetary Benefit when the standard deviation of costs and effectiveness in each group differ.

1 2 3 4 5 | ```
## First, create a lambda object
object_lambda <- create_object_lambda (20000)
## Then, create a var_inmb_diff object
var_inmb_diff <- create_object_var_inmb_diff(sdc_ref=2100, sdc_exp=2100, sde_ref = 0.12,
sde_exp = 0.12, rho = 0.1,object_lambda = object_lambda)
``` |

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