desc.wts: Diagnosis of weights

In twang: Toolkit for Weighting and Analysis of Nonequivalent Groups

Diagnosis of weights

Description

desc.wts assesses the quality of a set of weights on balancing a treatment and control group.

Usage

desc.wts(data, 
         w, 
         sampw = sampw,
         vars = NULL, 
         treat.var, 
         tp, 
         na.action = "level",
         perm.test.iters=0,
         verbose=TRUE,
         alerts.stack,
         estimand, multinom = FALSE, fillNAs = FALSE)

Arguments

data	a data frame containing the dataset
w	a vector of weights equal to nrow(data)
sampw	sampling weights, if provided
vars	a vector of variable names corresponding to data
treat.var	the name of the treatment variable
tp	a title for the method “type" used to create the weights, used to label the results
na.action	a string indicating the method for handling missing data
perm.test.iters	an non-negative integer giving the number of iterations of the permutation test for the KS statistic. If perm.test.iters=0 then the function returns an analytic approximation to the p-value. This argument is ignored is x is a ps object. Setting perm.test.iters=200 will yield precision to within 3% if the true p-value is 0.05. Use perm.test.iters=500 to be within 2%
verbose	if TRUE, lots of information will be printed to monitor the the progress of the fitting
alerts.stack	an object for collecting warnings issued during the analyses
estimand	the estimand of interest: either "ATT" or "ATE"
multinom	Indicator that weights are from a propsensity score analysis with 3 or more treatment groups.
fillNAs	If TRUE fills NAs with zeros.

Details

desc.wts calls bal.stat to assess covariate balance. If perm.test.iters>0 it will call bal.stat multiple times to compute Monte Carlo p-values for the KS statistics and the maximum KS statistic. It assembles the results into a list object, which usually becomes the desc component of ps objects that ps returns.

Value

See the description of the desc component of the ps object that ps returns

See Also

ps

twang documentation built on Sept. 11, 2024, 8:47 p.m.