match.data: Output Matched Data Sets

In DanRunfola/SimTests: MatchIt: Nonparametric Preprocessing for Parametric Casual Inference

Description

match.data outputs matched data sets from matchit().

Usage

  match.data(object, group="all", distance = "distance",
weights = "weights", subclass = "subclass")

Arguments

object	The output object from matchit. This is a required input.
group	This argument specifies for which matched group the user wants to extract the data. Available options are "all" (all matched units), "treat" (matched units in the treatment group), and "control" (matched units in the control group). The default is "all".
distance	This argument specifies the variable name used to store the distance measure. The default is "distance".
weights	This argument specifies the variable name used to store the resulting weights from matching. The default is "weights".
subclass	This argument specifies the variable name used to store the subclass indicator. The default is "subclass".

Value

Returns a subset of the original data set sent to matchit(), with just the matched units. The data set also contains the additional variables distance, weights, and subclass. The variable distance gives the estimated distance measure, and weights gives the weights for each unit, generated in the matching procedure. The variable subclass gives the subclass index for each unit (if applicable). See the http://gking.harvard.edu/matchit/ for the complete documentation and type demo(match.data) at the R prompt to see a demonstration of the code.

Author(s)

Daniel Ho [e-mail]; Kosuke Imai [e-mail]; Gary King [e-mail]; Elizabeth Stuart [e-mail]

See Also

Please use help.matchit to access the matchit reference manual. The complete document is available online at http://gking.harvard.edu/matchit.

DanRunfola/SimTests documentation built on May 6, 2019, 1:23 p.m.