Project delivery indices and their sources
| Factors | Cost | Time | Quality | Cost saving | Time saving | Client's satisfaction |
|---|---|---|---|---|---|---|
| Aibinu and Jagboro (2002) | √ | √ | √ | – | – | – |
| Ajibade and Odeyinka (2006) | √ | √ | √ | – | – | – |
| Augustine and Mangvwat (2001) | √ | √ | √ | – | – | – |
| Doloi et al. (2010) | √ | √ | √ | √ | – | – |
| Elinwa and Joshua (2001) | √ | √ | √ | – | – | – |
| Koushki et al. (2005) | √ | √ | – | – | – | – |
| Love et al. (1998) | √ | √ | √ | – | – | √ |
| Seeley and Murray (2001) | √ | – | – | – | – | – |
| Ogunsemi and Jagboro (2006) | √ | √ | √ | – | – | – |
| Oyewobi (2010) | √ | √ | √ | – | – | – |
| Ramus et al. 2006 | √ | √ | √ | – | – | – |
| Wardani et al. (2006) | √ | √ | √ | – | – | – |
Relationship between bond indices and project delivery indices_
| Bond type | Bond indices | Test statistics | Contract/initial cost of project (ICP) | Final cost of project (FCP) | Project cost overrun (PCO) | Initial duration of project (IDP) | Final duration of project (FDP) | Project time overrun (PDO) |
|---|---|---|---|---|---|---|---|---|
| Bid bond | Cost/amount of bond (CABb) | Pearson correlation | 0.915** | 0.914** | 0.914** | 0.258 | 0.418** | 0.422** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.000 | 0.108 | 0.007 | 0.007 | ||
| Cost of securing bond (CSBb) | Pearson correlation | 0.915** | 0.914** | 0.914** | 0.258 | 0.418** | 0.422** | |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.000 | 0.108 | 0.007 | 0.007 | ||
| No. of days to secure bond (NDb) | Pearson correlation | −0.382* | −0.402* | −0.113 | −0.055 | −0.090 | −0.091 | |
| Sig. (two-tailed) | 0.015 | 0.010 | 0.741 | 0.735 | 0.579 | 0.575 | ||
| Performance bond | Cost/amount of bond (CABp) | Pearson correlation | 1.000** | 0.998** | −0.350 | 0.382* | 0.607** | 0.608** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.291 | 0.015 | 0.000 | 0.000 | ||
| Cost of securing bond (CSBp) | Pearson correlation | 0.973** | 0.969** | −0.491 | 0.422** | 0.693** | 0.702** | |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.125 | 0.007 | 0.000 | 0.000 | ||
| No. of days to secure bond (NDp) | Pearson correlation | −0.345* | −0.367* | −0.400 | −0.156 | −0.113 | −0.059 | |
| Sig. (two-tailed) | 0.029 | 0.020 | 0.223 | 0.338 | 0.487 | 0.718 | ||
| Advance payment bond | Cost/amount of bond (CABa) | Pearson correlation | 0.922** | 0.919** | −0.363 | 0.323* | 0.551** | 0.582** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.273 | 0.048 | 0.000 | 0.000 | ||
| Cost of securing bond (CSBa) | Pearson correlation | 0.879** | 0.880** | −0.069 | 0.286 | 0.522** | 0.569** | |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.839 | 0.082 | 0.001 | 0.000 | ||
| No. of days to secure bond (NDa) | Pearson correlation | −0.246 | −0.271 | −0.085 | 0.035 | 0.092 | 0.113 | |
| Sig. (two-tailed) | 0.137 | 0.100 | 0.804 | 0.833 | 0.583 | 0.499 | ||
| Retention bond | Cost/amount of bond (CABr) | Pearson correlation | 0.916** | 0.915** | 0.560 | 0.377* | 0.729** | 0.782** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.073 | 0.017 | 0.000 | 0.000 | ||
| Cost of securing bond (CSBr) | Pearson correlation | 0.692** | 0.690** | 0.560 | 0.269 | 0.489** | 0.514** | |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.073 | 0.094 | 0.001 | 0.001 | ||
| No. of days to secure bond (NDr) | Pearson correlation | −0.376* | −0.396* | −0.085 | −0.140 | −0.122 | −0.081 | |
| Sig. (two-tailed) | 0.017 | 0.011 | 0.804 | 0.387 | 0.453 | 0.619 | ||
| Average (all bonds) | Cost/amount of bond (CABav) | Pearson correlation | 0.921** | 0.920** | −0.317 | 0.356* | 0.546** | 0.538** |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.342 | 0.024 | 0.000 | 0.000 | ||
| Cost of securing bond (CSBav) | Pearson correlation | 0.782** | 0.783** | −0.058 | 0.277 | 0.415** | 0.406** | |
| Sig. (two-tailed) | 0.000 | 0.000 | 0.865 | 0.083 | 0.008 | 0.009 | ||
| No. of days to secure bond (NDav) | Pearson correlation | −0.372* | −0.392* | −0.199 | −0.125 | −0.113 | −0.079 | |
| Sig. (two-tailed) | 0.018 | 0.012 | 0.558 | 0.443 | 0.486 | 0.628 |