Table 5.

Pearson correlation coefficient of the differences-in-differences model

PatentsSOPostR&DDualCashRoeGrowSizeTech
Patents1         
SO0.190***1        
Post0.168***0.057***1       
R&D0.100***0.136***0.0643***1      
Dual0.098***0.077***0.01760.147***1     
Cash−0.051***0.121***−0.1418***0.306***0.135***1    
Roe0.0220.042**−0.0298*−0.015−0.0090.032*1   
Grow−0.015−0.008−0.014−0.211***−0.161***−0.286***−0.0171  
Size0.305***0.103***0.221***−0.167***−0.185***−0.279***0.042**0.515***1 
Tech0.205***−0.047***0.0150.300***0.069***0.187***0.009−0.222***−0.21***1

Notes:

***p < 0.01; **p < 0.05; *p < 0.1

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