Defining costs for events and intervention

add_cost(.data = NULL, cost, evt, trt, cycle_l = NULL, cycle_starttime = 0)

Arguments

.data: Existing cost data
cost: Value or expression to calculate the cost estimate
evt: Vector of events for which this cost is applicable
trt: Vector of interventions for which this cost is applicable
cycle_l: Cycle length; only needed if costs are calculated per cycle
cycle_starttime: Cycle when costs start being accrued; only needed if costs are calculated per cycle

Value

A list of costs

Details

Costs can be defined by writing expressions and objects in the cost argument whose execution will be delayed until the model runs.

This function accepts the use of pipes (%>%) to define multiple costs.

Examples

add_cost(evt = c("start","idfs","ttot"),trt = "int",cost = cost.int*fl.int + cost.idfs)
#> $start_int
#> $start_int$cost
#> cost.int * fl.int + cost.idfs
#> 
#> $start_int$cycle_l
#> NULL
#> 
#> $start_int$cycle_starttime
#> [1] 0
#> 
#> 
#> $idfs_int
#> $idfs_int$cost
#> cost.int * fl.int + cost.idfs
#> 
#> $idfs_int$cycle_l
#> NULL
#> 
#> $idfs_int$cycle_starttime
#> [1] 0
#> 
#> 
#> $ttot_int
#> $ttot_int$cost
#> cost.int * fl.int + cost.idfs
#> 
#> $ttot_int$cycle_l
#> NULL
#> 
#> $ttot_int$cycle_starttime
#> [1] 0
#> 
#>