黃河泉 发表于 2018-4-8 15:42 
不过,根据检定,你就只有一个门槛值,所以你的问题也不重要了。
谢谢黄老师的回复,我还有两个门槛检验结果麻烦老师帮忙看一下。
xthreg dlnnewsr lnnewsr0 lnnewpd lnacq lnabs lnreno lnsize, rx( lndom ) qx( ln
> abs ) thnum(3) trim(0.01 0.01 0.05) grid(400) bs(0 300 300) thgiven nobslog no
> reg
Estimating the threshold parameters: 2nd ...... 3rd ...... Done
Boostrapping for threshold effect test: 2nd ...... 3rd ...... Done
Threshold estimator (level = 95):
-----------------------------------------------------
model | Threshold Lower Upper
-----------+-----------------------------------------
Th-1 | 4.8304 4.7791 4.8440
Th-21 | 4.8304 4.7791 4.8440
Th-22 | 3.3676 3.3090 3.7226
Th-3 | 1.7733 1.7013 1.9796
-----------------------------------------------------
Threshold effect test (bootstrap = 0 300 300):
-------------------------------------------------------------------------------
Threshold | RSS MSE Fstat Prob Crit10 Crit5 Crit1
-----------+-------------------------------------------------------------------
Single | 187.2795 0.2926 36.85 0.0000 13.7064 16.9688 22.3431
Double | 174.3464 0.2724 47.48 0.0000 11.8432 14.8813 19.5849
Triple | 171.6122 0.2681 10.20 0.1333 11.7478 15.9233 29.7242
-------------------------------------------------------------------------------
这个结果是说明存在双门槛吗?但是这里三门槛的值最小,合理吗?
另一个结果是:
xthreg dlnnewsr lnnewsr0 lnnewpd lnacq lnabs lnreno lnsize, rx( lndom ) qx( ln
> reno ) thnum(3) trim(0.01 0.01 0.05) grid(400) bs(0 300 300) thgiven nobslog n
> oreg
Estimating the threshold parameters: 2nd ...... 3rd ...... Done
Boostrapping for threshold effect test: 2nd ...... 3rd ...... Done
Threshold estimator (level = 95):
-----------------------------------------------------
model | Threshold Lower Upper
-----------+-----------------------------------------
Th-1 | 10.3941 10.3568 10.4112
Th-21 | 10.3941 10.3568 10.4112
Th-22 | 11.1072 11.0957 11.1085
Th-3 | 11.0957 11.0890 11.1072
-----------------------------------------------------
Threshold effect test (bootstrap = 0 300 300):
-------------------------------------------------------------------------------
Threshold | RSS MSE Fstat Prob Crit10 Crit5 Crit1
-----------+-------------------------------------------------------------------
Single | 189.7515 0.2965 28.04 0.0267 16.2074 20.6603 41.4111
Double | 187.9571 0.2937 6.11 0.6500 15.8036 19.4396 25.1202
Triple | 181.8009 0.2841 21.67 0.0300 12.7496 17.2679 33.0536
-------------------------------------------------------------------------------
这个结果双门槛不显著,三门槛又是显著的,合理吗?