Table 1 OLS results

Variable

Coefficient

95 % Confidence Interval

Probability

Robust t statistic

Robust Probability

VIF value

Intercept

−144.516

(−219.025, −70.067)

<0.001

−3.533

0.001

-

NUMagen

85.618

(−92.803, 264.034)

0.349

0.937

0.351

1.415

PROagr

54.867

(−54.985, 164.719)

0.330

0.767

0.444

1.886

Per capita GDP

−23.246

(−40.265, −6.227)

<0.001

−4.167

<0.001

1.211

PROmin

200.603

(127.491, 273.715)

<0.001

3.062

0.003

1.961

POPden

0.068

(0.058,0.078)

<0.001

6.468

<0.001

1.344

Number of Observations

98

1196.76

Multiple R squared

0.779

0.768

Joint F statistic

67.878

<0.001

Joint Wald statistic

181.455

<0.001

Koenker(BP) statistic

26.564

<0.001

Jarque-Beta statistic

108.815

<0.001