for Target Cost Contracts in Construction: A Delphi Study - PolyU ...

Construction Law Journal (CLJ)
(Final Accepted Manuscript), Volume 28, Issue 8, November 2012, Pages 590-613
and quality, the remaining four KPIs primarily focus on the measures of working relationship
between the employer and the contractor.
Round 3: Establishing individual weightings for the seven most important KPIs
In the third round of the Delphi questionnaire, experts were requested to indicate the level of
importance (rating) on the top seven selected KPIs based on a 5-point Likert scale (i.e. 1 =
least important; 2 = slightly important; 3 = important; 4 = very important; and 5 = most
important) to evaluate the performance of TCC/GMP projects. Finally, all the 14 panel
members submitted their completed questionnaires in July 2011 pursuant to some email
reminders.
Table 5: Results of Round 3 Delphi survey
Key Performance Indicators (KPIs) for TCC/GMP Rank Mean Corresponding
construction projects
rating weighting
Mutual trust between project partners 1 4.71 0.180
Final out-turn cost exceeding the final contract target
cost or guaranteed maximum price value or not
2 4.14 0.158
Time performance 3 4.07 0.155
Magnitude of disputes and conflicts 4 3.50 0.134
Client’s satisfaction on the quality of completed work 4 3.50 0.134
Contractor’s involvement in project design 6 3.21 0.123
Time required for the settlement of final project
account
7 3.07 0.117
Number of respondents 14
Kendall’s coefficient of concordance (W) 0.552
Critical value of W from statistical table 0.137
Degree of freedom 6
Level of significance