阶段

参数

估计值

95%置信区间

第一阶段

$\beta$

$2.6463\times {10}^{-8}$

$2.644\times {10}^{-8}~2.649\times {10}^{-8}$

${\lambda }_1$

0.2798

0.2794~0.2802

${\lambda }_2$

0.1002

0.1002~0.1002

第二阶段

$\beta$

$4.4991\times {10}^{-8}$

$4.495\times {10}^{-8}~4.503\times {10}^{-8}$

${\lambda }_1$

0.1947

0.1946~0.1948

${\lambda }_2$

0.0647

0.0645~0.0650

第三阶段

$\beta$

$1.8298\times {10}^{-9}$

$1.826\times {10}^{-9}~1.833\times {10}^{-9}$

${\lambda }_1$

0.1067

0.1065~0.1069

${\lambda }_2$

0.0182

0.0182~0.0182