R: Equivariant Wedge-Shaped ICE Region with Confidence Level...
Equivariant Wedge-Shaped ICE Region with Confidence Level from 0.50 to 0.99
ICEwedge() uses the Bootstrap Distribution of ICE Uncertainty generated by ICEuncrt()
to calculate and sort ICE Angle Order Statistics around a circle. ICEwedge() then
counts outwards the same number of ICE Angle Order Statistics, floor(R*conf/2), both
Counter-Clockwise and Clockwise from the so-called center Order Statistic (the one
nearest to the Observed ICE Ratio) to define a pair of ICE Ray Endpoints at ICE Angle
Order Statistics (reported as numbers jlo and kup, respectively) that subtend an ICE
Polar Angle reported as being of subangle in degrees.
ICEwedge(ICEu, lfact = 1, conf = 0.95)
Output list object of class ICEuncrt.
Either a strictly positive multiplicative factor for ICEu item lambda
or else 0 to cause ICEwedge to compute the positive lfact and lambda values which
transforms the alibi display so that it has an alias interpretation.
Statistical Confidence Level within [0.50, 0.99].
The plot() of an object of class ICEwedge displays the Bootstrap Distribution of ICE
Uncertainty with a small, circular, colored dot (pch = 20). Outcomes outside the Wedge
are displayed in black, while outcomes inside the Wedge are displayed in cyan. Upper
and lower ICE Ray Limits are displayed as solid black lines, and the ICE Ray through
the center ICE Angle Order Statistic is shown as a dashed black line.
An object of class ICEwedge with the following output list:
Name of the ICEuncrt object input to ICEwedge().
Positive value of lfact * ICEu item lambda
Positive Multiplier for the ICEu item lambda value input to ICEwedge().
Saved value of unit, cost or effe, input to ICEuncrt.
Statistical Confidence Level within [0.50, 0.99] input to ICEwedge.
Saved integer value for number of bootstrap replications input to ICEuncrt.
R x 4 data.frame with ICE Angle in column 1, bootstrap resampled values of
(DeltaEffe, DeltaCost) in columns 2 and 3, and the binary flag with 0 => outcome outSide the
Confidence Wedge and 1 => outcome inSide the Confidence Wedge in column 4.
Observed value of (DeltaEffe, DeltaCost) when each patient is sampled exactly once.
The center ICE Angle closest to the Objerved ICE Ratio.
The largest value of j such that axys[j, 1] < ia1 <= axys[j+1, 1].
Number of the ICE Angle Order Statistic defining the Clockwise or lower ICE Ray
boundary of the Confidence Wedge.
Number of the ICE Angle Order Statistic defining the Counter-Clockwise or upper
ICE Ray boundary of the Confidence Wedge.
Subtended Polar ICE Angle between Order Statistics numbers jlo and kup.
Alias plots of ICEwedge have horizontal range [-xmax, +xmax].
Alias plots of ICEwedge have vertical range [-ymax, +ymax].
ICE angle computation perspective of alibi or alias.
Bob Obenchain <email@example.com>
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. Resampling and multiplicity in cost-effectiveness inference. Journal of
Biopharmaceutical Statistics 1999; 9(4): 563-582.
Obenchain RL. ICE Preference Maps: Nonlinear Generalizations of Net Benefit and Acceptability.
Health Serv Outcomes Res Method 2008; 8: 31-56. DOI 10.1007/s10742-007-0027-2.
Obenchain RL. ICEinR.pdf Vignette-like documentation for ICEinfer
stored in the R library/ICEinfer/doc folder. 2009; 30 pages.
ICEuncrt and ICEcolor
# ICEwedge() calculations are rather slow
dpwdg <- ICEwedge(dpunc)
# ICE Angle computations using the alibi axes with an alias interpretation
dpwdg0 <- ICEwedge(dpunc, lfact=0)
R version 3.3.1 (2016-06-21) -- "Bug in Your Hair"
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Loading required package: lattice
> png(filename="/home/ddbj/snapshot/RGM3/R_CC/result/ICEinfer/ICEwedge.Rd_%03d_medium.png", width=480, height=480)
> ### Name: ICEwedge
> ### Title: Equivariant Wedge-Shaped ICE Region with Confidence Level from
> ### 0.50 to 0.99
> ### Aliases: ICEwedge
> ### Keywords: methods nonparametric robust
> ### ** Examples
> # ICEwedge() calculations are rather slow
> dpwdg <- ICEwedge(dpunc)
> # ICE Angle computations using the alibi axes with an alias interpretation
> dpwdg0 <- ICEwedge(dpunc, lfact=0)
Created & Maintained by Osamu Ogasawara (firstname.lastname@example.org) and