bal.ks.psa {PSAgraphics} | R Documentation |
Automates the Kolgomorov-Smirnov 2-sample nonparametric test of equivalence of two distrbutions across multiple pairs of sample distributions.
bal.ks.psa(continuous, treatment = NULL, strata = NULL)
continuous |
Quantitative covariate that is being balanced within strata in a PSA. If continuous
has three columns, then the second and third are assumed to be the treatment and strata respectively. Missing values are not allowed. |
treatment |
Binary variable of same length as continuous ; generally 0 for 'control,' 1 for 'treatment.' |
strata |
Integer variable (usually 1 - 5); A vector of same length as continuous indicating the derived strata from estimated propensity scores. Generally 5 or 6 strata are used, but graph works reasonably well at least up to 10 strata. |
Makes multiple calls to ks.test
, returning a vector of p-values associated with strata
from a Propensity Score Analysis.
Returns a vector of same length as the number of strata containing the p-values from the KS-test of equivalence of distributions for each stratum-treatment pair.
James E. Helmreich James.Helmreich@Marist.edu
Robert M. Pruzek RMPruzek@yahoo.com
bal.ms.psa
, bal.cs.psa
, bal.cws.psa
continuous<-rnorm(1000) treatment<-sample(c(0,1),1000,replace=TRUE) strata<-sample(5,1000,replace=TRUE) bal.ks.psa(continuous,treatment,strata)