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Table 6 Parameter estimates predicting the dynamics of collaborative interdependences

From: Exploring the networking behaviors of hospital organizations

  Estimate Standard Error p-value
Independent variables
 N° common specialties −0.405 0.147 0.048 *
 Case-mix (alter) −0.891 0.413 0.584  
 Case-mix (ego) 0.866 0.452 0.612  
 Case-mix (similarity) −0.921 0.647 0.039 *
 LHA 1.330 0.154 < 0.000 **
 Staffed beds (alter) 0.002 0.001 0.002 **
 Staffed beds (ego) 0.001 0.001 0.163  
 Staffed beds (similarity) −0.228 0.546 0.376  
 Geographical distance −0.013 0.003 < 0.000 **
 Productivity (alter) 0.004 0.004 0.842  
 Productivity (ego) −0.003 0.004 0.772  
 Productivity (similarity) 1.704 0.699 0.061  
 Emergency admissions (alter) 0.005 0.003 0.824  
 Emergency admissions (ego) 0.018 0.003 0.072  
 Emergency admissions (similarity) 0.902 0.256 0.050 *
Endogenous processes
 Outdegree −2.576 0.177 < 0.000 **
 Reciprocity 0.717 0.205 < 0.000 **
 Transitive ties 0.771 0.234 0.006 **
 Three-cycles −0.164 0.097 0.583  
 Balance 0.072 0.052 0.251  
 Indegree-popularity 0.029 0.027 0.121  
 Outdegree-activity −0.126 0.074 0.341  
  1. *p < 0.05; **p < 0.01. P-values are based on approximately normal distributions of t-ratios (defined as the parameter estimate divided by the standard error)