Digital economy and regulatory quality
| OLS | FS (1) | 2SLS (1) | FS (2) | 2SLS (2) | FS (3) | 2SLS (3) | |
|---|---|---|---|---|---|---|---|
| LIT | 0.0115 | 0.0124 | |||||
| [0.0015]*** | [0.0015]*** | ||||||
| INST | −0.0232 | −0.0307 | |||||
| [0.0056]*** | [0.0047]*** | ||||||
| REG | 0.091 | 0.112 | 0.515 | 0.186 | |||
| [0.042]** | [0.107] | [0.212]** | [0.102]* | ||||
| ln(GDPC) | 0.013 | 0.013 | 0.020 | 0.016 | |||
| [0.007]* | [0.006]** | [0.007]*** | [0.006]*** | ||||
| ln(FD) | −0.026 | −0.030 | −0.098 | −0.029 | |||
| [0.028] | [0.028] | [0.054]* | [0.029] | ||||
| ln(EXP) | −0.003 | −0.005 | −0.031 | −0.014 | |||
| [0.008] | [0.010] | [0.015]** | [0.009] | ||||
| ln(GINI) | 0.035 | 0.039 | 0.130 | 0.091 | |||
| [0.080] | [0.087] | [0.083] | [0.081] | ||||
| GRAD | −0.018 | −0.019 | −0.030 | −0.018 | |||
| [0.005]*** | [0.005]*** | [0.008]*** | [0.005]*** | ||||
| POP | 0.007 | 0.008 | 0.019 | 0.012 | |||
| [0.004]* | [0.005] | [0.005]*** | [0.005]*** | ||||
| ln(INC) | 0.024 | 0.026 | 0.053 | 0.029 | |||
| [0.009]*** | [0.007]*** | [0.016]*** | [0.008]*** | ||||
| Adj-R2 | 0.907 | 0.865 | 0.789 | 0.876 | |||
| F-test (FS) | – | 56.34 | 17.14 | 45.12 | |||
| H-test (p) | – | – | – | 0.612 | |||
| DWH-test (p) | 0.085 | 0.036 | 0.033 | ||||
| Macro FE | Yes | Yes | Yes | Yes | |||
| Time FE | Yes | Yes | Yes | Yes | |||
| Period | 2004–2019 | 2004–2019 | 2004–2019 | 2004–2019 | |||
| Obs | 312 | 312 | 312 | 312 |
| OLS | FS (1) | 2SLS (1) | FS (2) | 2SLS (2) | FS (3) | 2SLS (3) | |
|---|---|---|---|---|---|---|---|
| LIT | 0.0115 | 0.0124 | |||||
| [0.0015]*** | [0.0015]*** | ||||||
| INST | −0.0232 | −0.0307 | |||||
| [0.0056]*** | [0.0047]*** | ||||||
| REG | 0.091 | 0.112 | 0.515 | 0.186 | |||
| [0.042]** | [0.107] | [0.212]** | [0.102]* | ||||
| ln(GDPC) | 0.013 | 0.013 | 0.020 | 0.016 | |||
| [0.007]* | [0.006]** | [0.007]*** | [0.006]*** | ||||
| ln(FD) | −0.026 | −0.030 | −0.098 | −0.029 | |||
| [0.028] | [0.028] | [0.054]* | [0.029] | ||||
| ln(EXP) | −0.003 | −0.005 | −0.031 | −0.014 | |||
| [0.008] | [0.010] | [0.015]** | [0.009] | ||||
| ln(GINI) | 0.035 | 0.039 | 0.130 | 0.091 | |||
| [0.080] | [0.087] | [0.083] | [0.081] | ||||
| GRAD | −0.018 | −0.019 | −0.030 | −0.018 | |||
| [0.005]*** | [0.005]*** | [0.008]*** | [0.005]*** | ||||
| POP | 0.007 | 0.008 | 0.019 | 0.012 | |||
| [0.004]* | [0.005] | [0.005]*** | [0.005]*** | ||||
| ln(INC) | 0.024 | 0.026 | 0.053 | 0.029 | |||
| [0.009]*** | [0.007]*** | [0.016]*** | [0.008]*** | ||||
| Adj- | 0.907 | 0.865 | 0.789 | 0.876 | |||
| – | 56.34 | 17.14 | 45.12 | ||||
| – | – | – | 0.612 | ||||
| DWH-test ( | 0.085 | 0.036 | 0.033 | ||||
| Macro FE | Yes | Yes | Yes | Yes | |||
| Time FE | Yes | Yes | Yes | Yes | |||
| Period | 2004–2019 | 2004–2019 | 2004–2019 | 2004–2019 | |||
| Obs | 312 | 312 | 312 | 312 |
Note(s): *p < 0.1; **p < 0.05; ***p < 0.01; standard errors clustered at regional level in brackets; Digital Economy (DE2): broadband deployment in businesses; FS: 1st Stage; F-test: F-test on excluded instruments; H-test: Hansen J test on over-identifying restrictions; Durbin–Wu–Hausman-test (DWH): endogeneity test defined as the difference of two Sargan–Hansen statistic
Source(s): Authors’ elaboration
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