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Table 6 The robustness test of the cross terms of national level variable and trade cost density (general)

From: Measuring aggregate trade costs and its empirical effects on manufacturing export composition in China

Dependent variable: χ it 1 2 3 4 5 6 7 8
c i  × T t −3.959*** −2.142*** −2.506*** −0.377 −3.372 *** −3.622*** −2.229*** −0.951
(−8.09) (−3.33) (−2.94) (−0.37) (−6.77) (−7.12) (−3.31) (−1.36)
c i  × Justice Court t 0.245***        
(−3.89)
c i  × Legal structure and Property rights t   0.287***       
(−3.99)
c i  × Trade compliance costs t    −0.203*      
(−1.90)
c i  × Tariff t     0.574***     
(−3.87)
c i  × Control index t      0.211***    
(−4.1)
c i  × Non-tariff barrier t       0.114**   
(−2.08)
c i  × Total degree of freedom index t        0.584***  
(−3.45)
c i  × ln(capital GDP) t         0.346***
(−5.57)
Industrial fixed effect Yes Yes Yes Yes Yes Yes Yes Yes
Time-fixed effect Yes Yes Yes Yes Yes Yes Yes Yes
R 2 0.6715 0.6727 0.6535 0.6713 0.6741 0.6547 0.6667 0.6935
Observation 238 238 238 238 238 238 238 238
  1. Note: *** represents a significant level at 1%; ** represents a significant level at 5%; * represents a significant level at 10%. The value in the brackets is value of t