Table 4
Model estimates of revenue per shipment for truck-load carriers

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Model estimates of revenue per shipment for truck-load carriers


Table summary
This table displays the results of model estimates of revenue per shipment for truck-load carriers model 1, model 2a and model 2b, calculated using coefficient, p-value, model 1, model 2a and model 2b units of measure (appearing as column headers).
  Model 1 Model 2A Model 2B
  coefficient p-value coefficient p-value coefficient p-value
Domestic  
Year 12 0.019 13 0.033 13 0.026
Distance 0.0297 0.460 0.0145 0.749 0.0145 0.549
Distance x tonnes 0.124 0.000 0.128 0.000 0.128 0.000
Distance x tonnes x tonnes -0.00377 0.000 -0.00388 0.000 -0.00388 0.000
Distance x tonnes x year 0.00156 0.017 0.00176 0.016 0.00176 0.062
Distance x distance -0.00001 0.136 -0.00001 0.240 -0.00001 0.134
Intercept 157 0.000 155 0.000 155 0.000
Export  
Year 9 0.408 12 0.369 12 0.537
Distance 0.331 0.000 0.311 0.000 0.311 0.001
Distance x tonnes 0.135 0.000 0.138 0.000 0.138 0.000
Distance x tonnes x tonnes -0.00455 0.000 -0.00459 0.000 -0.00459 0.000
Distance x tonnes x year -0.00088 0.060 -0.00087 0.098 -0.00087 0.239
Distance x distance -0.00007 0.000 -0.00007 0.000 -0.00007 0.000
Export binary 140 0.001 142 0.005 142 0.052
Import  
Year 25 0.005 26 0.007 26 0.025
Distance 0.13 0.005 0.0888 0.078 0.0888 0.079
Distance x tonnes 0.15 0.000 0.156 0.000 0.156 0.000
Distance x tonnes x tonnes -0.00574 0.000 -0.00596 0.000 -0.00596 0.000
Distance x tonnes x year 0.0032 0.000 0.00334 0.000 0.00334 0.000
Distance x distance -0.00002 0.029 -0.00001 0.165 -0.00001 0.295
Import binary -21 0.599 -9 0.854 -9 0.867
  Model 1 Model 2A Model 2B
Diagnostic statistics  
Number of observations 337,079 337,079 337,079
F-statistics 472 393 464
R-squared 0.62 0.59 0.59
Note(s): 
For estimates in Models 1 and 2A, p-values are based on analytical, robust standard errors corrected for within-group (trucking firm) correlation. P-values in Model 2B are based on jackknife standard errors. Estimates in Model 1 include commodity fixed effects (using commodities classified under the Standard Classification of Transported Goods at the 5-digit level); estimates in Models 2A and 2B do not.
Source(s): 
Statistics Canada, Trucking Commodity Origin and Destination Survey, 2004 to 2009; and Bureau of Transportation Statistics, North American Transborder Freight Data, 2004 to 2009, and Commodity Flow Survey, 2007.
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