Table 4. OLS Estimates of labor productivity growth rates (in percentage points).
|
Dependent variable |
Any innovation |
_______Product_______ |
_______Process_______ | |||
|
Coefficient |
Robust |
Coefficient |
Robust |
Coefficient |
Robust | |
|
Innovative firms_______ |
15.12** |
7.094 |
2.588 |
5.954 |
-Ш- |
6.006 |
|
∆2 ln K- *Innov 2 L |
0.2587*** |
0.008 |
7___⅛⅛⅛ 0.292 |
0.009 |
7 ~ Ш |
0.009 |
|
. K. . ∆ 2 ln —— *nonInnov 2 L ~ Lit |
0.01 |
0.015 |
0.069 |
0.011 |
0.019 |
0.012 |
|
Age* Innov__________ |
-0.283*** |
0.069 |
7__⅝*⅛ -0.286 |
0.085 |
7 " _ ⅝*⅛ -0.366 |
0.078 |
|
Age*non Innov______ |
0.091 |
0.125 |
-0.109 . |
0.084 |
0.066 |
0.091 |
|
Temporary *Innov_____ |
-0.095*** |
0.035 |
-0.073* |
0.041 |
7 _ ⅝*⅛ -0.106 |
0.039 |
|
Temporary *non_Innov |
-0.199*** |
0.046 |
--7—----_ ⅜⅜⅜---- -0.213 |
0.037 |
---7______⅜⅜⅜----- -0.197 |
0.039 |
|
Large_______________ |
Σ $ -1.94 |
1.113 |
-1.894* |
1.108 |
-1.081 |
1.096 |
|
Medium___________ |
* — ,*** -5.74 |
0.876 |
--Σ—_ _-⅜⅜⅜---- -5.965 |
0.871 |
________⅜⅜⅜---- -4.970 |
0.864 |
|
Group______________ |
___⅛⅛⅛ 2.86_______ |
0.680 |
7 __⅛⅛⅛ 3.199 |
0.679 |
Z .„*** 2.48 |
0.675 |
|
Constant_____________ |
2.61 |
10.19 |
14.019 |
8.799 |
3.637 |
9.216 |
|
Industry dummies_____ |
yes |
yes |
yes | |||
|
Region dummies_____ |
yes |
yes |
yes | |||
|
Wald test for equality o: |
coefficients ' |
between Innovative and non Innovative_________________ | ||||
|
Capital-lab or ratio |
[0.000] |
[0.000] |
[0.000] | |||
|
Age______________ |
[0.0085] |
[0.138] |
[0.0003] | |||
|
Share of temporary |
[0.069] |
[0.011] |
[0.0946] | |||
|
Chow test F__________ |
[0.000] |
[0.000] |
[0.000] | |||
|
Adj R2_______________ |
0.154 |
0.157 |
0.171 | |||
|
N____________ |
7977 |
7977 |
7977 | |||
Note: * 10%, ** 5%, *** 1% level of significance, p-values in brackets. Size, areas, industry and group dummies
are included in all regressions.
Table 4 shows the OLS coefficients and robust standard errors of the estimates of labor productivity
growth rates (two-year rates) on our variables of interest, interacted with the group dummies.
“Innov” refers to the group of firms introducing an innovation in 2001-2003, while “non_Innov”
refers to the group of the non innovative firms. Column 1 and 2 refer to firms which have
introduced any - hence either product or process - innovation. Column 3 and 4 refer to firms which
have introduced product innovation only and column 5 and 6 refer to firms having introduced
process innovation only. All the regressions include standard control variables such as size,
geographical areas, industry dummies, as well as the dummy that takes a value of one for firms
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