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Table 8 Restricted access problems and innovation performance in the biotechnology industry: Poisson regression results of variables versus innovation performance

From: Effects of research tool patents on biotechnology innovation in a developing country: A case study of South Korea

Innovation performance Coeff. Std. err. P > z
Constant*** 1.377 0.266 0.000
Difficulty** 0.073 0.034 0.033
Size* 0.290 0.171 0.090
Age 0.003 0.002 0.242
Sigma 0.826 0.048 0.000
  Number of obs. 76  
  Log likelihood --856.413  
  Chi squared 1121.803  
  Prob > chi2 0.000  
  1. Poisson model with normal heterogeneity
  2. *** denotes the correlation coefficient observed at significance level < 0.01.
  3. ** denotes the correlation coefficient observed at significance level < 0.05.
  4. * denotes the correlation coefficient observed at significance level < 0.10.