MET: Tax price of machinery and equipment used for the purposes of RD

−10.4777***

(3.6899)

−7.5696*

(4.1070)

−9.045713

(2.9122)

CTR: Corporate income tax rate

2.7470

(5.3648)

−2.8114

(4.6122)

−3.4787

(4.6365)

BST: Tax price buildings and structures used for the purposes of RD

4.2040

(2.7930)

−0.2782

(2.8422)

PEP: Average year of data or the number of years covert by the study

0.4873*

(0.2754)

NB: Number of observations in the study

0.4408*

(0.2446)

0.3786

(0.2514)

BRD: Lagged Business enterprises expenditure in R&D

0.9977*

(0.5967)

0.9024

(0.6012)

GS: Direct Gov. support on RD and Europe Commission

0.2716

(0.6026)

0.468424

(0.6314)

HE: High Education expenditure by gov (Human Capital indicator)

0.4408*

(0.2314)

−0.454677**

(0.2289)

FET: Funds from abroad foreign enterprises

−0.5935***

(0.1444)

−0.589440***

(0.1341)

NOB: Number of observation

284

284

284

284

284

R-squared

0.4597

0.4620

0.4776

0.5395

0.5413

F-statistics

23.2334

19.3939

15.2571

16.2785

16.3975