plot.iptw {twang} | R Documentation |
Plots for iptw
objects
Description
This function produces a collection of diagnostic plots for iptw
objects.
Usage
## S3 method for class 'iptw'
plot(
x,
plots = "optimize",
subset = NULL,
color = TRUE,
timePeriods = NULL,
multiPage = FALSE,
figureRows = NULL,
hline = c(0.1, 0.5, 0.8),
...
)
Arguments
x |
An iptw object.
|
plots |
An indicator of which type of plot is desired. The options are
-
"optimize" or 1 A plot of the balance criteria as a function of the GBM
iteration.
-
"boxplot" or 2 Boxplots of the propensity scores for the treatment and
control cases
-
"es" or 3 Plots of the standardized effect size of the pre-treatment
variables before and after reweighing
-
"t" or 4 Plots of the p-values from t-statistics comparing means of
treated and control subjects for pretreatment variables, before and after
weighting.
-
"ks" or 5 Plots of the p-values from Kolmogorov-Smirnov statistics
comparing distributions of pretreatment variables of treated and control
subjects, before and after weighting.
|
subset |
Used to restrict which of the stop.method s will be used
in the figure. For example subset = c(1,3) would indicate that the
first and third stop.method s (in alphabetical order of those specified
in the original call to iptw ) should be included in the figure.
|
color |
If color = FALSE , figures will be gray scale. Default: TRUE .
|
timePeriods |
The number of distinct time points. If NULL , this is assumed to be the number
of ps objects (i.e., the number of distinct time points).
|
multiPage |
When multiple frames of a figure are produced, multiPage = TRUE will print each
frame on a different page. This is intended for situations where the graphical output is being
saved to a file. Default: FALSE .
|
figureRows |
The figure rows, passed to displayPlots. Default: NULL .
|
hline |
Arguments passed to panel.abline .
|
... |
Additional arguments.
|
Details
This function produces lattice-style graphics of diagnostic plots.
References
Dan McCaffrey, G. Ridgeway, Andrew Morral (2004). "Propensity
Score Estimation with Boosted Regression for Evaluating Adolescent
Substance Abuse Treatment", Psychological Methods 9(4):403-425.
See Also
iptw
[Package
twang version 2.6.1
Index]