Table 6 The regression results for the 30 economic sectors in the gravity model.

From: A multi-regional input-output table mapping China's economic outputs and interdependencies in 2012

No. Sectors β 0 β 1 β 2 β 3 R 2
1 Agriculture −7.03 0.96 0.58 −1.17 0.56
2 Coal mining 2.99 0.31 0.46 −1.55 0.42
3 Petroleum and gas 0.10 0.18 0.22 −0.67 0.12
4 Metal mining 1.67 0.39 0.48 −1.22 0.43
5 Nonmetal mining −3.09 0.38 0.75 −1.10 0.49
6 Food processing and tobacco −7.48 0.94 0.60 −1.17 0.48
7 Textiles −11.42 0.78 1.10 −0.86 0.83
8 Clothing, leather, fur, etc. −7.29 0.83 0.67 −1.11 0.71
9 Wood processing and furnishing −1.81 0.62 0.55 −1.12 0.56
10 Paper making, printing, stationery, etc. −9.70 0.59 1.14 −1.13 0.52
11 Petroleum refining, coking, etc. −12.13 0.67 1.07 −0.94 0.62
12 Chemical industry −7.75 0.94 0.66 −1.07 0.73
13 Nonmetal products −5.97 0.95 0.60 −1.30 0.55
14 Metallurgy −14.60 0.71 1.31 −1.01 0.76
15 Metal products −0.77 0.61 0.47 −1.27 0.67
16 General and specialist machinery −8.58 0.69 0.90 −1.13 0.72
17 Transport equipment −6.01 1.01 0.47 −1.28 0.75
18 Electrical equipment −10.68 0.78 0.98 −1.20 0.74
19 Electronic equipment −15.41 0.67 1.43 −1.20 0.67
20 Instrument and meter 1.51 0.54 0.28 −1.16 0.55
21 Other manufacturing −12.01 0.69 1.11 −0.93 0.69
22 Electricity and hot water production and supply 10.89 0.20 0.18 −1.92 0.40
23 Gas and water production and supply 6.05 0.18 0.25 −1.29 0.43
24 Construction 9.55 0.06 0.05 −1.45 0.49
25 Transport and storage −1.29 0.54 0.52 −0.95 0.63
26 Wholesale and retailing 1.12 0.41 0.36 −1.07 0.57
27 Hotel and restaurant 3.37 0.23 0.26 −0.99 0.45
28 Leasing and commercial services 5.02 0.39 0.22 −1.21 0.55
29 Scientific research 8.33 0.06 0.00 −1.25 0.43
30 Other services −3.90 0.66 0.59 −0.94 0.79
  1. β0, β1, β2, and β3 are regression coefficients. β1, β2 are weights assigned to the masses of origin and destination, respectively, and β3 is the distance decay parameter. R2 is the goodness of fit.