我做出的稳健性的豪斯曼检验是这个结果 选用什么效应呢
( 1) o.mdlnm = 0
( 2) mdlned = 0
( 3) o.mdlndist = 0
( 4) o.mdx = 0
( 5) o.mdlnlf = 0
( 6) mdlnpd = 0
( 7) o.mdshock = 0
( 8) mdfta = 0
( 9) o.mddel = 0
(10) o.mdneb = 0
(11) mdlnfree = 0
(12) o.mdt_i = 0
Constraint 1 dropped
Constraint 2 dropped
Constraint 3 dropped
Constraint 4 dropped
Constraint 5 dropped
Constraint 6 dropped
Constraint 7 dropped
Constraint 8 dropped
Constraint 9 dropped
Constraint 10 dropped
Constraint 11 dropped
Constraint 12 dropped
chi2( 0) = .
Prob > chi2 = .