PanelMatch (version 3.1.1)

print.matched.set: Print matched.set objects.

Description

Print matched.set objects.

Usage

# S3 method for matched.set
print(x, ..., verbose = FALSE, n = 5, show.all = FALSE)

Value

Returns nothing, but prints information about matched sets: treated observation IDs, the time of treatment, and the size of matched sets.

Arguments

x

a matched.set object

...

Not used. additional arguments to be passed to print

verbose

logical indicating whether or not output should be printed in expanded/raw list form. The verbose form is not recommended unless the data set is small. Default is FALSE, which prints an overview of matched set sizes.

n

Integer. Integer. Number of matched sets to display information about as a preview. Default is 5.

show.all

Logical. By default (`show.all = FALSE`), the print method only shows a small preview of the sizes of matched sets. When set to TRUE, a full summary description of matched set sizes is shown.

Examples

dem.sub <- dem[dem[, "wbcode2"] <= 100, ]
# create subset of data for simplicity
dem.sub.panel <- PanelData(dem.sub, "wbcode2", "year", "dem", "y")
PM.results <- PanelMatch(panel.data = dem.sub.panel, lag = 4,
                        refinement.method = "ps.match",
                        match.missing = TRUE,
                        covs.formula = ~ tradewb,
                        size.match = 5, qoi = "att",
                        lead = 0:4,
                        forbid.treatment.reversal = FALSE)
print(extract(PM.results, qoi = "att"))