黄老师您好,请问xthreg命令门槛效应显著性P值不是很小,只是小于0.1,可以认为具有门槛效应吗(比如为0.09、0.08、0.07),有时候运行一遍数据门槛显著性P值是0.08/0.09,可是再跑一遍就是0.11了,这种情况该怎么处理办呢,运行结果如下图,期待黄老师的解答!
第一个:
Threshold estimator (level = 90):
-----------------------------------------------------
model | Threshold Lower Upper
-----------+-----------------------------------------
Th-1 | 15.3600 15.3200 15.3800
-----------------------------------------------------
Threshold effect test (bootstrap = 500):
-------------------------------------------------------------------------------
Threshold | RSS MSE Fstat Prob Crit10 Crit5 Crit1
-----------+-------------------------------------------------------------------
Single | 4.6004 0.0106 13.19 0.0940 12.9797 15.3599 26.7116
-------------------------------------------------------------------------------
Fixed-effects (within) regression Number of obs = 450
Group variable: i Number of groups = 30
R-sq: within = 0.0971 Obs per group: min = 15
between = 0.0016 avg = 15.0
overall = 0.0059 max = 15
F(7,413) = 6.34
corr(u_i, Xb) = -0.7494 Prob > F = 0.0000
第二个:
Threshold estimator (level = 90):
-----------------------------------------------------
model | Threshold Lower Upper
-----------+-----------------------------------------
Th-1 | 15.3600 15.3200 15.3800
-----------------------------------------------------
Threshold effect test (bootstrap = 500):
-------------------------------------------------------------------------------
Threshold | RSS MSE Fstat Prob Crit10 Crit5 Crit1
-----------+-------------------------------------------------------------------
Single | 4.6046 0.0106 13.93 0.0740 12.9220 15.4175 23.0195
-------------------------------------------------------------------------------
Fixed-effects (within) regression Number of obs = 450
Group variable: i Number of groups = 30
R-sq: within = 0.0963 Obs per group: min = 15
between = 0.0003 avg = 15.0
overall = 0.0126 max = 15
F(6,414) = 7.35
corr(u_i, Xb) = -0.6989 Prob > F = 0.0000


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