Variables | No. of Questions | Cronbach’s Alpha Coefficient |
Optimal public relations (general index) | 8 | 0.810 |
Interactive | 8 | 0.841 |
Instrumental and technological | 18 | 0.865 |
Managerial | 21 | 0.885 |
Value | 17 | 0.889 |
Number of questionnaires | 72 | 0.943 |