各位大神,求助各位帮我看看这样的结果(1)门槛效应检验p值显示存在双门槛,但是下面分段的系数有一个不显著,p为0.585.
(2)按照结果,画了LR的统计图,单门限值与图对应不上,双门限的图有两个在显著水平之下,各位帮我看看是我命令出错了?还是别的问题呢?下面是我画图的命令
_matplot e(LR21), columns(1 2) yline(7.35, lpattern(dash)) connect(direct) msize(small) mlabp(0) mlabs(zero) ytitle("LR Statistics") xtitle("First Threshold") recast(line) name(LR21) nodraw
. _matplot e(LR22), columns(1 2) yline(7.35, lpattern(dash)) connect(direct) msize(small) mlabp(0) mlabs(zero) ytitle("LR Statistics") xtitle("Second Threshold") recast(line) name(LR22) nodraw
. graph combine LR21 LR22, cols(1)