Round two Delphi study results – elements of OMP for maintenance management of public buildings in Nigeria
| Sub-attributes | Median (M) | Mean () | Standard deviation (σx) | Interquartile deviation (IQD) | Mean scores ranking (R) |
|---|---|---|---|---|---|
| Organisation operational efficiency | 8 | 8.11 | 1.55 | 1.00 | 12 |
| Suitable maintenance procedures and process | 9 | 8.31 | 1.54 | 1.00 | 6 |
| Assembling of maintenance organisation structure | 8 | 8.25 | 0.77 | 1.00 | 8 |
| Analysis of maintenance procedures | 5 | 5.50 | 1.41 | 1.25 | 23 |
| Preparation of maintenance operation | 8 | 8.13 | 0.72 | 1.00 | 10 |
| Preparation of safety procedure | 9 | 8.59 | 1.08 | 0.63 | 1 |
| Risk factor establishment | 9 | 8.38 | 0.72 | 1.00 | 5 |
| Target performance measurement | 6 | 6.65 | 1.27 | 2.00 | 17 |
| Routinisation of optimisation techniques | 6 | 5.70 | 1.36 | 1.65 | 20 |
| Maintenance strategies development | 8 | 8.05 | 1.48 | 1.00 | 14 |
| Spare-part management | 6 | 6.25 | 1.44 | 2.00 | 18 |
| Meeting maintenance objectives | 8 | 8.00 | 1.73 | 1.00 | 15 |
| Optimisation of the maintenance policy | 9 | 8.53 | 1.73 | 0.50 | 2 |
| Optimisation of the maintenance action plan | 9 | 8.47 | 2.10 | 0.50 | 3 |
| Well-defined priority system | 9 | 8.40 | 1.24 | 1.00 | 4 |
| Appropriate procurement strategy | 8 | 8.07 | 1.49 | 1.00 | 12 |
| Change in policy and its associated results | 8 | 8.20 | 1.52 | 1.00 | 9 |
| Working in-line with regulatory agencies* | 6 | 5.60 | 1.92 | 2.00 | 21 |
| Maintenance contracts suitability | 6 | 6.73 | 1.58 | 2.00 | 16 |
| Timely identification of maintenance work | 6 | 6.00 | 1.20 | 1.50 | 19 |
| Reduction in mean time to repair | 5 | 5.60 | 1.35 | 2.00 | 21 |
| Design of a preventive plan* | 8 | 8.27 | 0.70 | 1.00 | 7 |
| Optimisation of preventive maintenance design* | 8 | 8.13 | 0.74 | 0.50 | 10 |
| Sub-attributes | Median ( | Mean ( | Standard deviation ( | Interquartile deviation (IQD) | Mean scores ranking ( |
|---|---|---|---|---|---|
| Organisation operational efficiency | 8.11 | 1.55 | 1.00 | 12 | |
| Suitable maintenance procedures and process | 8.31 | 1.54 | 1.00 | 6 | |
| Assembling of maintenance organisation structure | 8.25 | 0.77 | 1.00 | 8 | |
| Analysis of maintenance procedures | 5.50 | 1.41 | 1.25 | 23 | |
| Preparation of maintenance operation | 8.13 | 0.72 | 1.00 | 10 | |
| Preparation of safety procedure | 8.59 | 1.08 | 0.63 | 1 | |
| Risk factor establishment | 8.38 | 0.72 | 1.00 | 5 | |
| Target performance measurement | 6.65 | 1.27 | 2.00 | 17 | |
| Routinisation of optimisation techniques | 5.70 | 1.36 | 1.65 | 20 | |
| Maintenance strategies development | 8.05 | 1.48 | 1.00 | 14 | |
| Spare-part management | 6.25 | 1.44 | 2.00 | 18 | |
| Meeting maintenance objectives | 8.00 | 1.73 | 1.00 | 15 | |
| Optimisation of the maintenance policy | 8.53 | 1.73 | 0.50 | 2 | |
| Optimisation of the maintenance action plan | 8.47 | 2.10 | 0.50 | 3 | |
| Well-defined priority system | 8.40 | 1.24 | 1.00 | 4 | |
| Appropriate procurement strategy | 8.07 | 1.49 | 1.00 | 12 | |
| Change in policy and its associated results | 8.20 | 1.52 | 1.00 | 9 | |
| Working in-line with regulatory agencies* | 5.60 | 1.92 | 2.00 | 21 | |
| Maintenance contracts suitability | 6.73 | 1.58 | 2.00 | 16 | |
| Timely identification of maintenance work | 6.00 | 1.20 | 1.50 | 19 | |
| Reduction in mean time to repair | 5.60 | 1.35 | 2.00 | 21 | |
| Design of a preventive plan* | 8.27 | 0.70 | 1.00 | 7 | |
| Optimisation of preventive maintenance design* | 8.13 | 0.74 | 0.50 | 10 |
Note(s): The three marked *italic elements in Table 4 were the new elements of OMP that the panelist suggested and was included for rating by all the experts in the second round of the questionnaire because they were considered important by the research team
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