小白是第一次做门槛回归,做了一个双门槛回归,对于回归结果有些不明白,想麻烦大家帮我解答一下疑问,回归结果如下:-----------------------------------------------------
model | Threshold Lower Upper
-----------+-----------------------------------------
Th-1 | 78.0100 68.7100 80.5000
Th-21 | 78.0100 68.7100 80.5000
Th-22 | 59.2000 56.0750 59.6000
-----------------------------------------------------
Threshold effect test (bootstrap = 500 500):
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Threshold | RSS MSE Fstat Prob Crit10 Crit5 Crit1
-----------+-------------------------------------------------------------------
Single | 1.1340 0.0047 68.08 0.0000 26.6428 31.0150 43.7246
Double | 0.9553 0.0039 45.46 0.0040 22.4963 27.1827 36.1412
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Fixed-effects (within) regression Number of obs = 252
Group variable: province Number of groups = 28
R-sq: within = 0.9499 Obs per group: min = 9
between = 0.8473 avg = 9.0
overall = 0.8651 max = 9
F(12,212) = 334.75
corr(u_i, Xb) = -0.5482 Prob > F = 0.0000
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lnrgdp | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
gov | -.0182271 .0135202 -1.35 0.179 -.0448783 .0084241
fsc | .0225427 .0076503 2.95 0.004 .0074623 .0376231
dicr | -.000846 .0003267 -2.59 0.010 -.0014899 -.000202
pgdp | .0000216 1.03e-06 20.95 0.000 .0000196 .0000237
cfr | .0035551 .0007596 4.68 0.000 .0020578 .0050525
fcr | -.0115919 .0019191 -6.04 0.000 -.0153748 -.0078089
tr | .0059326 .0010009 5.93 0.000 .0039596 .0079056
cpi | -.0053944 .0027439 -1.97 0.051 -.0108033 .0000145
age | -.0182368 .0063672 -2.86 0.005 -.0307879 -.0056857
|
_cat#c.lev_1 |
0 | .0151792 .0019797 7.67 0.000 .0112767 .0190816
1 | .0094968 .0019484 4.87 0.000 .0056561 .0133374
2 | -.0098612 .003089 -3.19 0.002 -.0159503 -.003772
|
_cons | 9.904905 .1364539 72.59 0.000 9.635924 10.17389
-------------+----------------------------------------------------------------
sigma_u | .20760951
sigma_e | .06835716
rho | .90219239 (fraction of variance due to u_i)
------------------------------------------------------------------------------
F test that all u_i=0: F(27, 212) = 16.19 Prob > F = 0.0000
这里的Th-21(78.0100)、Th-22(59.2000 )是不是就代表了双门槛回归的第一门槛值和第二门槛值,如果是这样的话下面_cat#c.lev_1所显示的0、1、2分别是在什么区间里系数是 .0151792、 .0094968和 -.0098612?主要是第二个门槛值大于第一个门槛值的话,不太明白应该怎么解释影响?谢谢大家啦,感激不尽!