Results of the Econometric Model

Coef.

Robust Std. Err.

z

P > |z|

[95% Conf. Interval]

lngdp_t−1

0.7736759

0.0922681

8.39

0.000

0.5928337

0.9545181

lnroad_t

0.0590524

0.0348260

1.70

0.090

−0.0092054

0.1273102

Constant

1.5300870

0.5797300

2.64

0.008

0.3938369

2.6663370