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Table 7 The robustness test of the cross terms of industrial characteristic and national characteristic (general)

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

Dependent variable: χ it 1 2 3 4
c i  × T t −3.614*** −3.993*** −3.501*** −3.263***
(−6.50) (−8.94) (−6.88) (−6.69)
Human capital intensive i  × human capital stock t 0.002    0.0065***
(0.87) (2.92)
Material capital intensive i  × material capital stock t   0.00063***   0.00067***
(7.67) (7.88)
Contract density i  × legal rules t    0.066*** 0.027
(2.79) (1.27)
Industrial fixed effect Yes Yes Yes Yes
Time-fixed effect Yes Yes Yes Yes
R 2 0.6487 0.7257 0.6602 0.7402
Observation 238 238 238 238
  1. Note: *** represents a significant level at 1%. The value in the brackets is value of t
  2. Source: (1) The human capital intensity and material capital intensity are from the table of Sheng Wenwen (2014). (2) The contract intensity is from the table of Huang (2013). Data in the above three industrial level are re docking by industry. (3) The data of human capital stock is from World Bank secondary education enrolment rate. (4) The data of material capital stock is from the gross fixed capital formation in EU Klems database. (5) The data of law rule is the average value of these five indicators: Judicial independence, Impartial courts, Integrity of system, Protection of property rights and Legal Structure and Property Rights