sub-.PanelBalance: Subset PanelBalance objects

In PanelMatch: Matching Methods for Causal Inference with Time-Series Cross-Sectional Data

Subset PanelBalance objects

Description

Subset PanelBalance objects

Usage

## S3 method for class 'PanelBalance'
x[i, ...]

Arguments

x	PanelBalance object
i	numeric. Specifies which element to extract. Substantively, it specifies which PanelMatch configuration data to extract.
...	Not used

Value

Returns balance information for specified PanelMatch configuration. Note that results are still returned as a PanelBalance object. In order to return a list, use the [[ operator

Examples

dem$rdata <- runif(runif(nrow(dem)))
dem.panel <- PanelData(dem, "wbcode2", "year", "dem", "y")
pm.obj <- PanelMatch(lead = 0:3, lag = 4, refinement.method = "mahalanobis", 
                     panel.data = dem.panel, match.missing = TRUE,
                     covs.formula = ~ tradewb + rdata + I(lag(tradewb, 1:4)) + I(lag(y, 1:4)), 
                     size.match = 5, qoi = "att")

# create multiple configurations to compare
pm2 <- PanelMatch(lead = 0:3, lag = 4, refinement.method = "ps.match", 
                  panel.data = dem.panel, match.missing = TRUE,
                  covs.formula = ~ tradewb + rdata + I(lag(tradewb, 1:4)) + I(lag(y, 1:4)), 
                  size.match = 5, qoi = "att")

pb <- get_covariate_balance(pm.obj, pm2,
                            include.unrefined = TRUE,
                            panel.data = dem.panel, 
                            covariates = c("tradewb", "rdata"))
bal.maha <- pb[1]
bal.ps <- pb[2]                             

PanelMatch documentation built on April 3, 2025, 6:34 p.m.