门槛

门槛估计值

95%置信区间

(1)

单一门槛

15.375

[15.353,15.400]

双重门槛

15.375

[15.353,15.400]

12.114

[11.807,12.190]

三重门槛

17.808

[17.767,17.825]

(2)

单一门槛

15.375

[15.353,15.400]

双重门槛

15.375

[15.353,15.400]

11.891

[11.724,12.114]

三重门槛

17.808

[17.771,17.825]