Model 1

Model 2

Model 3

Model 4

Industry

0.019 (0.579)

0.048 (0.218)

0.008 (0.804)

0.031 (0.374)

Year

0.231** (0.003)

0.447** (0.023)

0.294** (0.031)

0.221** (0.005)

Scale

−0.212** (0.004)

−0.302** (0.011)

−0.460** (0.022)

−0.250** (0.001)

TI

0.558** (0.021)

1.733** (0.009)

KI

0.424** (0.002)

1.616** (0.015)

TI1

0.424** (0.013)

0.120 (0.083)

TI2

0.344** (0.027)

0.445** (0.001)

KI1

0.385** (0.011)

0.316** (0.014)

KI2

0.371** (0.001)

0.234** (0.004)

KI3

0.574** (0.021)

0.764** (0.018)

KI´TI

0.211** (0.039)

AdjR2

0.426

0.420

0.591

0.431

F value

36.858

22.910

44.636

31.577