desc.wts: Diagnosis of weights
In twang: Toolkit for Weighting and Analysis of Nonequivalent Groups

Description Usage Arguments Details Value See Also

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

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)

`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.

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.

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

ps

twang documentation built on Oct. 25, 2021, 5:08 p.m.