designmatch (version 0.5.4)

finetab: Tabulate the marginal distribution of a nominal covariate after matching

Description

Function for tabulating the marginal distributions of a nominal covariate for the treated units and matched controls.

Usage

finetab(nom_cov, t_id, c_id)

Value

A table with the counts for the treated units and matched controls for each category of a nominal covariate.

Arguments

nom_cov

a nominal covariate vector used to assess balance.

t_id

a vector of indexes of the treated units.

c_id

a vector of indexes of the matched controls.

Author

Jose R. Zubizarreta <[e-mail]>, Cinar Kilcioglu <[e-mail]>.

Details

finetab is a function for tabulating the marginal distributions of a nominal covariate for the treated units and matched controls. finetab is useful for assessing covariate balance after matching with after exact, near-exact matching, fine and near-balance with the bmatch or nmatch functions in the designmatch package.

Examples

	# Load data
	data(germancities)

	# Sort and attach data
	germancities = germancities[order(germancities$treat, decreasing = TRUE), ]
	attach(germancities)

	# Treatment indicator
	t_ind = treat
	
	# Indexes of the treated units
	t_id = which(t_ind == 1)

	# Indixes of the matched controls (obtained using bmatch in designmatch)
	c_id = c(80, 82, 35, 59, 69, 68, 34, 62, 104, 61, 106, 120, 56, 119, 28, 
	113, 76, 118, 75, 71)
 
 	# finetab
	finetab(publicat, t_id, c_id)
	finetab(busiservcat, t_id, c_id)