Environmental efficiency by countries (N = 40) and years (1990–2019). Specification A
| Country | Cobb–Douglas | Cobb–Douglas | Cobb–Douglas | Translog | Translog | Translog |
|---|---|---|---|---|---|---|
| Without institutions | With QG indicator (mean) | With ICRG indicator (mean) | Without institutions | With QG indicator (mean) | With ICRG indicator (mean) | |
| Albania | 0.6474 | 0.4613 | 0.4855 | 0.6525 | 0.5336 | 0.6093 |
| Armenia | 0.6823 | 0.5275 | 0.5700 | 0.6125 | 0.5375 | 0.5782 |
| Austria | 0.8710 | 0.9136 | 0.8715 | 0.8766 | 0.9247 | 0.8877 |
| Azerbaijan | 0.7035 | 0.5817 | 0.6320 | 0.6418 | 0.5324 | 0.6064 |
| Belarus | 0.6800 | 0.5448 | 0.5977 | 0.6833 | 0.5899 | 0.6509 |
| Belgium | 0.8723 | 0.9061 | 0.8624 | 0.8375 | 0.9000 | 0.8487 |
| Bulgaria | 0.9107 | 0.8438 | 0.8725 | 0.9107 | 0.8431 | 0.8920 |
| Croatia | 0.7938 | 0.7060 | 0.7039 | 0.8027 | 0.7667 | 0.7710 |
| Cyprus | 0.8157 | 0.8551 | 0.7916 | 0.7946 | 0.8581 | 0.8068 |
| Czech Republic | 0.7495 | 0.7359 | 0.6891 | 0.6835 | 0.7316 | 0.6812 |
| Denmark | 0.8832 | 0.9208 | 0.8794 | 0.8811 | 0.9282 | 0.8918 |
| Estonia | 0.8024 | 0.7621 | 0.7295 | 0.7653 | 0.7928 | 0.7521 |
| Finland | 0.8638 | 0.9098 | 0.8720 | 0.8233 | 0.9045 | 0.8582 |
| France | 0.8706 | 0.8937 | 0.8492 | 0.8859 | 0.9102 | 0.8767 |
| Germany | 0.8733 | 0.9000 | 0.8603 | 0.8917 | 0.9121 | 0.8863 |
| Greece | 0.7472 | 0.7357 | 0.6948 | 0.7158 | 0.7517 | 0.7116 |
| Hungary | 0.8517 | 0.8161 | 0.8070 | 0.8550 | 0.8467 | 0.8439 |
| Iceland | 0.8723 | 0.9175 | 0.8830 | 0.8846 | 0.9295 | 0.9040 |
| Ireland | 0.9229 | 0.9469 | 0.9274 | 0.9303 | 0.9539 | 0.9393 |
| Italy | 0.8329 | 0.8378 | 0.8086 | 0.8277 | 0.8554 | 0.8241 |
| Kazakhstan | 0.7000 | 0.5782 | 0.6327 | 0.6542 | 0.5810 | 0.6349 |
| Latvia | 0.7084 | 0.6562 | 0.6213 | 0.6839 | 0.6971 | 0.6650 |
| Lithuania | 0.8389 | 0.7891 | 0.7692 | 0.8676 | 0.8478 | 0.8440 |
| Luxembourg | 0.8795 | 0.9303 | 0.9027 | 0.7797 | 0.9018 | 0.8485 |
| Montenegro | 0.8904 | 0.8412 | 0.8284 | 0.9206 | 0.9106 | 0.9030 |
| Norway | 0.9229 | 0.9524 | 0.9338 | 0.9374 | 0.9599 | 0.9480 |
| Poland | 0.8755 | 0.8396 | 0.8398 | 0.8747 | 0.8401 | 0.8628 |
| Portugal | 0.7228 | 0.7405 | 0.6848 | 0.6917 | 0.7545 | 0.6978 |
| Republic of Mold | 0.5397 | 0.4213 | 0.4494 | 0.5354 | 0.4604 | 0.4921 |
| Romania | 0.8141 | 0.6761 | 0.7141 | 0.7082 | 0.6345 | 0.6817 |
| Russian Federation | 0.6265 | 0.5012 | 0.5178 | 0.5893 | 0.4999 | 0.5350 |
| Serbia | 0.5923 | 0.4885 | 0.4914 | 0.6008 | 0.5374 | 0.5537 |
| Slovakia | 0.8396 | 0.8111 | 0.7962 | 0.8698 | 0.8653 | 0.8596 |
| Slovenia | 0.7939 | 0.8039 | 0.7587 | 0.8058 | 0.8445 | 0.8062 |
| Spain | 0.8355 | 0.8468 | 0.7988 | 0.8401 | 0.8687 | 0.8291 |
| Sweden | 0.8698 | 0.9153 | 0.8776 | 0.8765 | 0.9270 | 0.8962 |
| Switzerland | 0.8873 | 0.9289 | 0.8978 | 0.8876 | 0.9345 | 0.9047 |
| Turkey | 0.8874 | 0.8087 | 0.8140 | 0.8746 | 0.7988 | 0.8382 |
| Ukraine | 0.4398 | 0.3602 | 0.3838 | 0.4033 | 0.3619 | 0.3873 |
| United Kingdom | 0.8856 | 0.9116 | 0.8773 | 0.9098 | 0.9280 | 0.9080 |
| Mean (HI) | 0.8417 | 0.8526 | 0.8182 | 0.8335 | 0.8677 | 0.8374 |
| Mean (LMI) | 0.5539 | 0.4363 | 0.4677 | 0.5170 | 0.4532 | 0.4858 |
| Mean (UMI) | 0.7455 | 0.6323 | 0.6575 | 0.7235 | 0.6467 | 0.6900 |
| Mean (Full) | 0.7945 | 0.7631 | 0.7494 | 0.7805 | 0.7782 | 0.7719 |
| Country | Cobb–Douglas | Cobb–Douglas | Cobb–Douglas | Translog | Translog | Translog |
|---|---|---|---|---|---|---|
| Without institutions | With QG indicator (mean) | With ICRG indicator (mean) | Without institutions | With QG indicator (mean) | With ICRG indicator (mean) | |
| Albania | 0.6474 | 0.4613 | 0.4855 | 0.6525 | 0.5336 | 0.6093 |
| Armenia | 0.6823 | 0.5275 | 0.5700 | 0.6125 | 0.5375 | 0.5782 |
| Austria | 0.8710 | 0.9136 | 0.8715 | 0.8766 | 0.9247 | 0.8877 |
| Azerbaijan | 0.7035 | 0.5817 | 0.6320 | 0.6418 | 0.5324 | 0.6064 |
| Belarus | 0.6800 | 0.5448 | 0.5977 | 0.6833 | 0.5899 | 0.6509 |
| Belgium | 0.8723 | 0.9061 | 0.8624 | 0.8375 | 0.9000 | 0.8487 |
| Bulgaria | 0.9107 | 0.8438 | 0.8725 | 0.9107 | 0.8431 | 0.8920 |
| Croatia | 0.7938 | 0.7060 | 0.7039 | 0.8027 | 0.7667 | 0.7710 |
| Cyprus | 0.8157 | 0.8551 | 0.7916 | 0.7946 | 0.8581 | 0.8068 |
| Czech Republic | 0.7495 | 0.7359 | 0.6891 | 0.6835 | 0.7316 | 0.6812 |
| Denmark | 0.8832 | 0.9208 | 0.8794 | 0.8811 | 0.9282 | 0.8918 |
| Estonia | 0.8024 | 0.7621 | 0.7295 | 0.7653 | 0.7928 | 0.7521 |
| Finland | 0.8638 | 0.9098 | 0.8720 | 0.8233 | 0.9045 | 0.8582 |
| France | 0.8706 | 0.8937 | 0.8492 | 0.8859 | 0.9102 | 0.8767 |
| Germany | 0.8733 | 0.9000 | 0.8603 | 0.8917 | 0.9121 | 0.8863 |
| Greece | 0.7472 | 0.7357 | 0.6948 | 0.7158 | 0.7517 | 0.7116 |
| Hungary | 0.8517 | 0.8161 | 0.8070 | 0.8550 | 0.8467 | 0.8439 |
| Iceland | 0.8723 | 0.9175 | 0.8830 | 0.8846 | 0.9295 | 0.9040 |
| Ireland | 0.9229 | 0.9469 | 0.9274 | 0.9303 | 0.9539 | 0.9393 |
| Italy | 0.8329 | 0.8378 | 0.8086 | 0.8277 | 0.8554 | 0.8241 |
| Kazakhstan | 0.7000 | 0.5782 | 0.6327 | 0.6542 | 0.5810 | 0.6349 |
| Latvia | 0.7084 | 0.6562 | 0.6213 | 0.6839 | 0.6971 | 0.6650 |
| Lithuania | 0.8389 | 0.7891 | 0.7692 | 0.8676 | 0.8478 | 0.8440 |
| Luxembourg | 0.8795 | 0.9303 | 0.9027 | 0.7797 | 0.9018 | 0.8485 |
| Montenegro | 0.8904 | 0.8412 | 0.8284 | 0.9206 | 0.9106 | 0.9030 |
| Norway | 0.9229 | 0.9524 | 0.9338 | 0.9374 | 0.9599 | 0.9480 |
| Poland | 0.8755 | 0.8396 | 0.8398 | 0.8747 | 0.8401 | 0.8628 |
| Portugal | 0.7228 | 0.7405 | 0.6848 | 0.6917 | 0.7545 | 0.6978 |
| Republic of Mold | 0.5397 | 0.4213 | 0.4494 | 0.5354 | 0.4604 | 0.4921 |
| Romania | 0.8141 | 0.6761 | 0.7141 | 0.7082 | 0.6345 | 0.6817 |
| Russian Federation | 0.6265 | 0.5012 | 0.5178 | 0.5893 | 0.4999 | 0.5350 |
| Serbia | 0.5923 | 0.4885 | 0.4914 | 0.6008 | 0.5374 | 0.5537 |
| Slovakia | 0.8396 | 0.8111 | 0.7962 | 0.8698 | 0.8653 | 0.8596 |
| Slovenia | 0.7939 | 0.8039 | 0.7587 | 0.8058 | 0.8445 | 0.8062 |
| Spain | 0.8355 | 0.8468 | 0.7988 | 0.8401 | 0.8687 | 0.8291 |
| Sweden | 0.8698 | 0.9153 | 0.8776 | 0.8765 | 0.9270 | 0.8962 |
| Switzerland | 0.8873 | 0.9289 | 0.8978 | 0.8876 | 0.9345 | 0.9047 |
| Turkey | 0.8874 | 0.8087 | 0.8140 | 0.8746 | 0.7988 | 0.8382 |
| Ukraine | 0.4398 | 0.3602 | 0.3838 | 0.4033 | 0.3619 | 0.3873 |
| United Kingdom | 0.8856 | 0.9116 | 0.8773 | 0.9098 | 0.9280 | 0.9080 |
| Mean (HI) | 0.8417 | 0.8526 | 0.8182 | 0.8335 | 0.8677 | 0.8374 |
| Mean (LMI) | 0.5539 | 0.4363 | 0.4677 | 0.5170 | 0.4532 | 0.4858 |
| Mean (UMI) | 0.7455 | 0.6323 | 0.6575 | 0.7235 | 0.6467 | 0.6900 |
| Mean (Full) | 0.7945 | 0.7631 | 0.7494 | 0.7805 | 0.7782 | 0.7719 |
Source(s): Authors own creation
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