Variables | Model 5 | Model 6 | Model 7 | Model 8 |
Control variables |
|
|
|
|
Firm size | 0.036 | 0.030 | 0.036 | 0.034 |
Firm nature | 0.035 | 0.043 | 0.031 | 0.035 |
Firm age | 0.124* | 0.116* | 0.094 | 0.102 |
Independent variables |
|
|
|
|
QM infrastructure practices (IP) |
| 0.211** | 0.194** | 0.189** |
QM core practices (CP) |
| 0.141* | 0.118* | 0.116* |
Moderator variables |
|
|
|
|
Market turbulence (MT) |
|
| 0.173** | 0.293** |
Two-way interactions |
|
|
|
|
MT*IP |
|
|
| 0.087 |
MT*CP |
|
|
| −0.121* |
R2 | 0.105 | 0.234 | 0.417 | 0.524 |
Corrected R2 | 0.078 | 0.218 | 0.392 | 0.508 |
ΔR2 |
| 0.129** | 0.312** | 0.419** |