| Causes of change orders in the Jordanian construction industry | Design errors | Incomplete design | Lack of communication between project parties | Time lag between design and construction phases | Estimation errors | Changes initiated by clients | Inconsistency between contract documents | Different site conditions | Shortages of materials |
| Design errors | 1.000 | 0.554** | 0.121 | −0.031 | 0.499** | −0.045 | 0.576** | 0.080 | 0.194* |
| Incomplete design |
| 1.000 | 0.167* | −0.109 | 0.561** | −0.239** | 0.492** | 0.065 | 0.283** |
| Lack of communication between project parties |
|
| 1.000 | 0.219** | 0.066 | 0.177* | 0.355** | 0.278** | 0.199* |
| Time lag between design and construction phases |
|
|
| 1.000 | −0.063 | 0.490** | −0.080 | 0.420** | 0.373** |
| Estimation errors |
|
|
|
| 1.000 | −0.270** | 0.458** | 0.050 | 0.354** |
| Changes initiated by clients |
|
|
|
|
| 1.000 | −0.129 | 0.288** | 0.118 |
| Inconsistency between contract documents |
|
|
|
|
|
| 1.000 | 0.114 | 0.111 |
| Different site conditions |
|
|
|
|
|
|
| 1.000 | 0.620** |
| Shortages of materials |
|
|
|
|
|
|
|
| 1.000 |