Explanatory variables

Dependent variable: IG_VIIT

Dependent variable: IG_HIIT

POLS

FEM

REM

POLS

FEM

REM

(1)

(2)

(3)

(1)

(2)

(3)

SIZE

0.004

0.008

0.007

0.012

0.012

0.012

(6.19)

(11.07)

(10.62)

(9.77)

(8.67)

(8.78)

DIFRD

9.18

2.799

3.378

−0.326

−2.226

−2.028

(8.81)

(2.40)

(2.93)

(−0.16)

(−0.91)

(−0.84)

DIFYP

0.86

0.751

0.759

−4.369

−3.433

−3.542

(5.42)

(5.22)

(5.26)

(−5.09)

(−4.16)

(−4.31)

DIFY

−0.002

−0.005

−0.004

−0.012

−0.014

−0.014

(−1.89)

(−5.16)

(−4.83)

(−6.50)

(−7.38)

(−7.29)

DIST

−0.124

−0.143

−0.141

−0.170

−0.190

−0.187

(−10.27)

(−13.15)

(−12.94)

(−6.94)

(−7.95)

(−7.88)

Constant

−1.238

−1.235

−1.298

−3.647

−3.525

−3.623

(−25.55)

(−26.44)

(−11.13)

(−38.03)

(−34.99)

(−17.65)

Number of observations

1552

1552

1552

1305

1305

1305

OLS R²

0.1069

0.1168

Overall R²

0.077

0.081

0.118

0.118

R² for between estimator

0.006

0.003

0.054

0.056

R² for within estimator

0.143

0.142

0.127

0.127

The poolability test

F_test_(20,1526) = 28.53

Prob > F = 0.0000

F_test_(20,1279) = 12.31

Prob > F = 0.0000

The Hausman test

χ² (5) = 24.53

Prob > χ² = 0.0002

χ² (5) = 7.55

Prob > χ² = 0.2093

The Wald test for groupwise heteroscedasticity^*

χ² (21) = 3451.40

Prob > χ² = 0.0000

χ² (21) = 2684.56

Prob > χ² = 0.0000