plot.ICEepmap {ICEinfer}R Documentation

Display the Indifference Curves of an ICE Economic Preference Map

Description

Display plots of the Indifference Curves of an ICE Economic Preference Map using the contourplot() and expand.grid() functions from the lattice package.

Usage

 ## S3 method for class 'ICEepmap':
 plot(x, xygrid = FALSE, ...)

Arguments

x Required; Output list object from either ICEepmap or ICEomega.
xygrid Optional; Either FALSE or a grid object for a lattice of (x, y) plotting positions.
... Optional; Argument(s) passed on to contourplot().

Details

If xygrid == FALSE, the default xygrid wiil be a 201 x 201 lattice of equally spaced plotting positions covering the x=DeltaEffe and y=DeltaCost ranges [-10,+10]. This default is: x <- seq(-10, +10, length = 201); y <- x; xygrid <- expand.grid(x = x, y = y)

Value

NULL

Author(s)

Bob Obenchain <softrx@iquest.net>

References

Cook JR, Heyse JF. Use of an angular transformation for ratio estimation in cost-effectiveness analysis. Statistics in Medicine 2000; 19: 2989-3003.

Obenchain RL. Incremental Cost-Effectiveness (ICE) Preference Maps. 2001 JSM Proceedings (Biopharmaceutical Section) on CD-ROM. (10 pages.) Alexandria, VA: American Statistical Association. 2002.

Obenchain RL. ICE Preference Maps: Nonlinear Generalizations of Net Benefit and Acceptability. Lilly US Health Outcomes White Paper. 2007; 52 pages.

See Also

ICEepmap and ICEomega

Examples

 epm <- ICEomega(beta=0.8)
 require(lattice)
 plot(epm)

[Package ICEinfer version 0.1-1 Index]