Variable | Mean | Standard deviation | Cronbach’s α-coefficient | Final number of question items |
1. Supplier collaboration | 3.51 | 0.436 | 0.764 | 8 |
2. Lead users collaboration | 3.62 | 0.512 | 0.784 | 8 |
3. Innovation behaviour | 3.76 | 0.478 | 0.716 | 7 |