在看一个do file  其中选择是PSM模型 LOGIT模型
use data, clear
cap safedrop u
generate u = uniform()
sort u
psmatch2 act sport age2 smoke2 drink disable disease marriage gender pension, out(mental) neighbor(1) ate
pstest age2 sport smoke2 drink disable disease marriage gender pension, both
probit mental act i.age2 i.gender smoke2 drink disable disease marriage sport pension
est store m1


请问这段话是什么意思？