Comparison of the mean NFD extent total index before and after implementation of the directive among firms with or with no stand-alone report both years
| Groups | n | 2015 | 2017 | Z |
|---|---|---|---|---|
| Total sample | 134 | 0.255 | 0.767 | 9.223*** |
| Sample firms with no stand-alone report both years | 60 | 0.098 | 0.728 | 6.600*** |
| Sample firms with stand-alone report both years | 12 | 0.633 | 0.850 | 1.183 |
| Groups | 2015 | 2017 | Z | |
|---|---|---|---|---|
| Total sample | 134 | 0.255 | 0.767 | 9.223 |
| Sample firms with no stand-alone report both years | 60 | 0.098 | 0.728 | 6.600 |
| Sample firms with stand-alone report both years | 12 | 0.633 | 0.850 | 1.183 |
Notes:
*p < 0.10; **p < 0.05; ***p < 0.01