xthreg y x2 x3 , rx(x) qx(x1) thnum(3) trim(0.01 0.01 0.05) bs(300 300 300)
Estimating the threshold parameters: 1st ...... 2nd ...... thest(): 3200 conformability error
thestm(): - function returned error
<istmt>: - function returned error
有谁知道为什么会出现这种情况吗?门槛变量与解释变量有什么要求吗?