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Table 2 Variables (X) considered in OLR analysis

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

Classification Variable Definition
Independent variable Attitude toward patents
(Evaluating effects of patents for innovation)
--2 = highly negative; --1 = negative;
0 = neither negative nor positive;
+1 = positive; +2 = highly positive
Dependent variable Degree of difficulty in acquiring research tools 1 = very easy; 2 = easy; 3 = neither easy nor difficult; 4 = difficult; 5 = very difficult
Control variable Size Log number of employees in 2007
  Age Number of months until 2007