过境免签政策与入境旅游增长——基于PSM-DID方法的分析
宋昌耀, 贾然, 厉新建
Transit Visa-free Policy and Inbound Tourism Growth: An Analysis based on PSM-DID Method
Changyao SONG, Ran JIA, Xinjian LI
表2
共同趋势检验
Tab. 2
Common trend hypothesis test
模型(1)
模型(3)
匹配前
匹配后
policy
—0.984***
—0.059 8
(—3.86)
(—0.37)
常数项
2.153***
2.333***
(15.41)
(18.86)
Log Likelihood
—550.4
—418.8
N
252
252