twang-package {twang}R Documentation

Toolkit for Weighting and Analysis of Nonequivalent Groups

Description

This package offers functions for propensity score estimating and weighting, nonresponse weighting, and diagnosis of the weights

Details

Package: twang
Version: 0.6-7
Date: 2006-5-17
Depends: R (>= 2.2), gbm (>= 1.5-3), survey
License: GPL (version 2 or newer)
Built: R 2.2.1; ; 2006-02-15 10:35:20; windows

Index:

bal.stat                Calculate weighted balance statistics
bal.table               Compute balance table
check.err               Reports on errors and warnings
desc.wts                Diagnosis of weights
diag.plot               Create diagnostic plots
dx.wts                  Propensity score diagnostics
ks.stat                 Functions for evaluating balance
lalonde                 Lalonde's National Supported Work Demonstration
                        data
metric.i                Losses for *.stat functions
print.dxwts             Print a diagnosis of the weights
ps                      Propensity score estimation
ps.summary              Computes balance measures
sensitivity             Sensitivity analysis
stop.methods            Rules for selecting the propensity scores
summary.ps              Summarize a ps object

Further information is available in the following vignettes:
twang Toolkit for Weighting and Analysis of Nonequivalent Groups: A guide to the twang package (source, pdf)

Author(s)

Greg Ridgeway gregr@rand.org, Dan McCaffrey danielm@rand.org, Andrew Morral morral@rand.org

Maintainer: Greg Ridgeway <gregr@rand.org>

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.

G. Ridgeway (2006). “Assessing the effect of race bias in post-traffic stop outcomes using propensity scores,” Journal of Quantitative Criminology 22(1).

See Also

The gbm package


[Package twang version 1.0-1 Index]