summary method for class Matchby
# S3 method for Matchby
summary(object, ... , digits=5)
An object of class "Matchby", usually, a
result of a call to Matchby.
The number of significant digits that should be displayed.
Other options for the generic summary function.
Jasjeet S. Sekhon, UC Berkeley, sekhon@berkeley.edu, https://www.jsekhon.com.
Also see Matchby, Match, GenMatch,
MatchBalance,
balanceUV, qqstats, ks.boot,
GerberGreenImai, lalonde