|
Y = Patent2t+1
|
---|
X = CoPatent2t
|
X = KmPatent2t
|
---|
(1)
|
(2)
|
---|
Intercept
|
− 9.6360***
|
− 9.6774***
|
(− 17.95)
|
(− 17.82)
|
Xt
|
0.0305**
|
0.0050*
|
(2.77)
|
(2.39)
|
Control variables
|
YES
|
YES
|
Firm & Year FE
|
YES
|
YES
|
Adj R2
|
19.18%
|
18.30%
|
Obs
|
3246
|
3246
|
- This table presents the regression results of the overall sample in regression (5). We have replaced RD1 for Patent2. Column (1) and (2) respectively shows the regression results of two explanatory variables on the dependent variable. Firm fixed effects and year fixed effects are controlled in the regression. The T statistic is in parentheses under the coefficient. *, **, and *** mean statistical significance at 5%, 1%, and 0.1% respectively