Table 2 Descriptive statistics.
Variable | Obs | Mean | Std.Dev. | Min | Max |
|---|---|---|---|---|---|
lnCitepatent | 22,200 | 0.446 | 0.653 | 0 | 2.197 |
DT_txt | 22,200 | 0.0633 | 0.133 | 0 | 0.692 |
DT_num | 22,200 | 0.00228 | 0.00447 | 0 | 0.0237 |
ENT | 22,200 | −12.38 | 1.699 | −15.16 | −9.714 |
lnage | 22,200 | 2.870 | 0.344 | 1.792 | 3.466 |
soe | 22,200 | 0.323 | 0.468 | 0 | 1 |
lnsize | 22,200 | 22.08 | 1.217 | 20.05 | 25.39 |
lnboard | 22,200 | 2.235 | 0.170 | 1.792 | 2.639 |
indp | 22,200 | 0.375 | 0.0520 | 0.333 | 0.556 |
top10 | 22,200 | 0.581 | 0.145 | 0.260 | 0.868 |
Lev | 22,200 | 0.403 | 0.201 | 0.0571 | 0.857 |
liquid | 22,200 | 2.663 | 2.667 | 0.435 | 15.22 |
ROA | 22,200 | 0.0393 | 0.0584 | −0.188 | 0.182 |
