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Table 4 Road

From: Estimating the contribution of infrastructure to national productivity in Europe

 

Main

Human capital

Tax

Trade

Investment

0.3160

0.3922

0.3234

0.2288

Population growth

0.3269

−0.0013

−1.4200

0.6536

Human capital

-

0.4231

-

-

Trend

0.0266

0.0194

0.0258

0.0198

AT (Over-investing)

−0.5343*** + (19)

−0.5049** ++ (17)

−0.5268*** ++ (19)

−0.1069 + (19)

BE (Under-investing)

3.1721*** + (16)

3.0996*** ++ (16)

3.1329*** ++ (16)

2.0762*** ++ (16)

BG

−0.0732 (17)

−0.0322 ++ (12)

−0.0735 (17)

−0.0698 (17)

CH

0.6240 +++ (24)

0.4826 + (16)

0.6897* +++ (22)

−0.0807 +++ (24)

CY

0.7480* (17)

0.6332** +++ (13)

0.4452* (17)

0.4204 + (17)

CZ

0.6683 + (18)

3.4612*** + (13)

0.3250 ++ (16)

0.6061 + (18)

DE

-

-

-

-

DK

1.0698*** (34)

−0.9564 +++ (17)

−0.5914 + (14)

0.8371*** + (34)

EE

0.2351 ++ (19)

1.2578* ++ (14)

0.2701 + (17)

0.2248 ++ (19)

EL

-

-

-

-

ES (Under-investing)

0.4069*** (32)

0.8856*** (20)

1.0523*** +++ (17)

−0.0186 +++ (32)

FI

0.0241 (22)

−0.2659 + (17)

0.0446 (22)

−0.0474 (22)

FR (Under-investing)

1.0486*** (20)

0.8554*** + (19)

0.5674** ++ (20)

0.0738 (20)

HU

0.0474* (15)

0.0433 (13)

0.0381 (15)

0.0757** (15)

IE (Under-investing)

3.0781*** ++ (15)

2.1653*** ++ (15)

2.1079** +++ (15)

1.5051** ++ (15)

IT

0.0011 (21)

−0.0226 ++ (19)

−0.0015 (21)

−0.0200 (21)

LT

−0.6858** (17)

2.5951* +++ (14)

−0.5701** ++ (17)

−0.7075** (17)

LU

−0.1117 + (15)

−0.0396 + (15)

−0.2573** + (15)

−0.0180 + (15)

LV (Over-investing)

−1.7923* + (17)

−0.9026 ++ (14)

−0.9356 ++ (17)

−1.9140* ++ (17)

MT

0.8976 (10)

0.9448* (10)

1.0045 (10)

0.6373 (10)

NL (Under-investing)

0.4599*** ++ (33)

0.4268 ++ (16)

0.6915*** +++ (17)

0.1033 ++ (33)

NO

3.6333*** (24)

2.6966** (16)

2.3772* ++ (17)

2.4351*** + (24)

PL

−0.0091 (17)

−0.0493 ++ (15)

0.0094 +++ (17)

0.0121 (17)

PT (Under-investing)

0.0167 +++ (17)

0.0160 +++ (17)

0.0427** ++ (17)

0.0518** ++ (17)

RO

0.1555 (16)

−0.2571 (15)

0.0044 (16)

0.2410 (16)

SE

0.0044 ++ (40)

−1.2814 (15)

−1.0097 (17)

−0.0431 ++ (40)

SI (Under-investing)

3.0219*** ++ (22)

0.1755 + (16)

0.7040 + (20)

0.7926** +++ (22)

SK

0.0410 +++ (20)

−0.0404 +++ (14)

0.0666* +++ (19)

0.0420 +++ (20)

UK

0.2532 +++ (37)

−2.0241*** + (20)

−0.4538 + (22)

0.2381 ++ (37)

Error-correction term

−0.6143

−1.0933

−0.8539

−0.6569

Adjusted R2 (long-run)

0.956

0.960

0.955

0.968

Adjusted R2 (short-run)

0.575

0.721

0.671

0.722

F-statistic (long-run)

466.6

236.7

346.6

582.8

F-statistic (short-run)

9.9

14.1

12.5

18.7

  1. For country-specific coefficients:
  2. Number of observations in the long-run equation given in brackets
  3. ***, ** and * indicate significance at the 1 %, 5 % and 10 % levels, respectively
  4. +++, ++ and + indicate equations where the null hypothesis of a unit root in the long-run residuals is rejected at the 1 %, 5 % and 10 % levels, respectively (i.e., a test for cointegration)