| No. | Factor | Mean | Std. | RII % | T-test | P-value | Rank |
|---|---|---|---|---|---|---|---|
| 1 | Resistance of managers to change planner system | 3.82 | 1.221 | 76.327 | 6.617 | 0.000 | 12 |
| 2 | Failure of management commitment to LPC implementation | 4.05 | 1.134 | 81.020 | 9.175 | 0.000 | 7 |
| 3 | Lack of human capital | 3.16 | 1.544 | 63.265 | 1.046 | 0.000 | 16 |
| 4 | Lack of understanding of new system | 3.71 | 1.339 | 74.286 | 5.280 | 0.000 | 13 |
| 5 | Lack of skills, training, and experience | 4.13 | 1.090 | 82.653 | 10.286 | 0.000 | 1 |
| 6 | Non-supportive organizational climate | 3.83 | 1.308 | 76.531 | 6.254 | 0.000 | 11 |
| 7 | Lack of stakeholder support | 3.91 | 1.236 | 78.163 | 7.274 | 0.000 | 10 |
| 8 | Lengthy approval procedure from client and top management | 4.11 | 1.064 | 82.245 | 10.351 | 0.000 | 3 |
| 9 | Misuse of information generated during implementation of LPC | 4.11 | 0.962 | 82.245 | 11.446 | 0.000 | 3 |
| 10 | Partial or late implementation of LPC | 3.94 | 1.208 | 78.776 | 7.691 | 0.000 | 9 |
| 11 | Unavailability of coordinate and cooperation between parties | 3.96 | 1.183 | 79.184 | 8.024 | 0.000 | 8 |
| 12 | Short-term vision | 3.03 | 1.516 | 60.612 | 0.200 | 0.000 | 18 |
| 13 | Misinterpretation of PPC indicator | 3.32 | 1.517 | 66.327 | 2.064 | 0.000 | 14 |
| 14 | Involvement of many parties joined the project, especially subcontractors and suppliers | 3.23 | 1.491 | 64.694 | 1.558 | 0.000 | 15 |
| 15 | Weak communication among participants of the production process | 3.13 | 1.597 | 62.653 | 0.822 | 0.000 | 17 |
| 16 | Lack of integration between client, consultant, contractor and supplier | 4.06 | 1.073 | 81.224 | 9.793 | 0.000 | 6 |
| 17 | Lack of implementation of advanced technology in construction | 4.07 | 1.077 | 81.429 | 9.849 | 0.000 | 5 |
| 18 | Lack of the training program for the managers | 4.13 | 0.970 | 82.653 | 11.559 | 0.000 | 1 |