weights.matched.set function

Extract the weights of matched control units

## S3 method for class 'matched.set'
weights(object)

Arguments

• object: matched.set object, extracted using the get.PanelMatch() method

Returns

list of named vectors. Each list element corresponds to a particular treated observation and contains the matched control units, along with their weights. These correspond to the "weights" attribute, which are calculated in the PanelMatch refinement process.

Examples

dem.panel <- PanelData(dem, "wbcode2", "year", "dem", "y")
PM.results <- PanelMatch(panel.data = dem.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)
r1 <- extract(PM.results, qoi = "att")
lt <- weights(r1)