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Table 2.

Estimates of the vector and credible intervals and standard deviations from the logistic part of the Bayesian two-part QR model with hurdles at 0 and 3. γ0, γ1, γ2, γ3 are parameters corresponding respectively to intercept, collaboration, title length, and journal internationality in the models

FieldParametersBTPQR with hurdle at 0BTPQR with hurdle at 3
Lower bandMeanUpper bandStandard deviationLower bandMeanUpper bandStandard deviation
Literature and Literary Theory γ0 6.465 8.918 10.875 1.072 4.444 7.265 10.082 1.457 
γ1 0.460 0.716 0.992 0.134 1.185 1.485 1.766 0.150 
γ2 0.001 0.016 0.030 0.008 −0.017 0.006 0.026 0.011 
γ3 −11.563 −9.527 −7.007 1.105 −12.844 −9.908 −6.922 1.511 
  
Arts and Humanities γ0 −1.703 0.519 2.574 1.100 3.821 5.628 7.635 0.965 
γ1 0.884 1.160 1.412 0.133 0.940 1.187 1.422 0.123 
γ2 0.003 0.027 0.051 0.012 −0.009 0.019 0.048 0.015 
γ3 −2.931 −0.835 1.484 1.137 −10.108 −8.030 −6.167 1.011 
  
Emergency Nursing γ0 11.437 14.064 16.804 1.399 10.035 12.087 14.206 1.081 
γ1 0.158 0.345 0.533 0.095 0.446 0.674 0.902 0.115 
γ2 0.020 0.048 0.078 0.014 0.026 0.057 0.087 0.015 
γ3 −18.095 −15.235 −12.592 1.425 −17.345 −15.120 −13.115 1.094 
  
Visual Arts and Performing Arts γ0 −3.712 −1.421 0.833 1.177 −2.207 −0.113 2.056 1.133 
γ1 0.399 0.622 0.854 0.115 0.837 1.056 1.287 0.111 
γ2 0.010 0.029 0.050 0.010 −0.018 0.005 0.028 0.010 
γ3 −0.881 1.490 3.900 1.245 −3.822 −1.506 0.655 1.198 
  
Architecture γ0 10.485 12.687 14.943 1.149 11.566 13.424 15.209 0.947 
γ1 0.433 0.595 0.774 0.088 0.309 0.472 0.664 0.092 
γ2 −0.027 −0.009 0.010 0.010 −0.034 −0.012 0.012 0.011 
γ3 −15.367 −13.068 −10.704 1.211 −17.418 −15.538 −13.524 1.024 
  
Religious Studies γ0 1.500 4.112 6.813 1.366 −2.269 0.746 3.664 1.497 
γ1 0.457 0.711 0.963 0.127 0.984 1.210 1.410 0.111 
γ2 0.004 0.027 0.045 0.011 −0.015 0.006 0.028 0.011 
γ3 −6.772 −3.945 −1.183 1.423 −5.328 −2.314 0.809 1.556 
  
Media Technology γ0 19.359 21.461 23.415 1.033 14.719 16.389 17.779 0.791 
γ1 0.499 0.685 0.867 0.098 0.099 0.297 0.488 0.096 
γ2 0.029 0.062 0.097 0.017 0.010 0.043 0.074 0.016 
γ3 −25.749 −23.635 −21.471 1.089 −20.710 −19.177 −17.353 0.867 
FieldParametersBTPQR with hurdle at 0BTPQR with hurdle at 3
Lower bandMeanUpper bandStandard deviationLower bandMeanUpper bandStandard deviation
Literature and Literary Theory γ0 6.465 8.918 10.875 1.072 4.444 7.265 10.082 1.457 
γ1 0.460 0.716 0.992 0.134 1.185 1.485 1.766 0.150 
γ2 0.001 0.016 0.030 0.008 −0.017 0.006 0.026 0.011 
γ3 −11.563 −9.527 −7.007 1.105 −12.844 −9.908 −6.922 1.511 
  
Arts and Humanities γ0 −1.703 0.519 2.574 1.100 3.821 5.628 7.635 0.965 
γ1 0.884 1.160 1.412 0.133 0.940 1.187 1.422 0.123 
γ2 0.003 0.027 0.051 0.012 −0.009 0.019 0.048 0.015 
γ3 −2.931 −0.835 1.484 1.137 −10.108 −8.030 −6.167 1.011 
  
Emergency Nursing γ0 11.437 14.064 16.804 1.399 10.035 12.087 14.206 1.081 
γ1 0.158 0.345 0.533 0.095 0.446 0.674 0.902 0.115 
γ2 0.020 0.048 0.078 0.014 0.026 0.057 0.087 0.015 
γ3 −18.095 −15.235 −12.592 1.425 −17.345 −15.120 −13.115 1.094 
  
Visual Arts and Performing Arts γ0 −3.712 −1.421 0.833 1.177 −2.207 −0.113 2.056 1.133 
γ1 0.399 0.622 0.854 0.115 0.837 1.056 1.287 0.111 
γ2 0.010 0.029 0.050 0.010 −0.018 0.005 0.028 0.010 
γ3 −0.881 1.490 3.900 1.245 −3.822 −1.506 0.655 1.198 
  
Architecture γ0 10.485 12.687 14.943 1.149 11.566 13.424 15.209 0.947 
γ1 0.433 0.595 0.774 0.088 0.309 0.472 0.664 0.092 
γ2 −0.027 −0.009 0.010 0.010 −0.034 −0.012 0.012 0.011 
γ3 −15.367 −13.068 −10.704 1.211 −17.418 −15.538 −13.524 1.024 
  
Religious Studies γ0 1.500 4.112 6.813 1.366 −2.269 0.746 3.664 1.497 
γ1 0.457 0.711 0.963 0.127 0.984 1.210 1.410 0.111 
γ2 0.004 0.027 0.045 0.011 −0.015 0.006 0.028 0.011 
γ3 −6.772 −3.945 −1.183 1.423 −5.328 −2.314 0.809 1.556 
  
Media Technology γ0 19.359 21.461 23.415 1.033 14.719 16.389 17.779 0.791 
γ1 0.499 0.685 0.867 0.098 0.099 0.297 0.488 0.096 
γ2 0.029 0.062 0.097 0.017 0.010 0.043 0.074 0.016 
γ3 −25.749 −23.635 −21.471 1.089 −20.710 −19.177 −17.353 0.867 
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