Table 2

Sample strata

StrataMinimum sample size in each stratumMaximum sample size in each stratum
Green Building Consultant46766x150=946766x384=23
Quantity Surveyors215766x150=42215766x384=108
Architects255766x150=50255766x384=128
Construction Project Managers150766x150=29150766x384=75
Construction Managers100766x150=20100766x384=50
Total150384
Source(s): Authors' own work

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