##Counter Match 1-to-5

> psboot(Y, D, fitted(pscore.glm), sims=500, n.match=5, grp=grp)
500 iter.(ate= -0.05565507 sd= 0.02320944 )...
** 1 grp.(ate= -0.1375681 sd= 0.02953321 )...
** 2 grp.(ate= 0.03267809 sd= 0.03480357 )...