## 3 Results
### Materials and Resources  
Figure 6 depicts the boxplot and [PERSON]'s \(\delta\) results in the MR category. According to the boxplot, the range was wide in all four certification levels (0-7, 0-8, 2-7, and 4-9 achieved points in Certified, Silver, Gold, and Platinum projects, respectively), whereas the median increased from level to level (2, 3, 4, and 7 achieved points in Certified, Silver, Gold, and Platinum, respectively). According to [PERSON]'s \(\delta\), the MR category showed low achievement in all four certification levels.  
Table 6 provides the median \(\pm\) IQR (25 th-75 th) and [PERSON]'s \(\delta\) results in MR credits. In all four certification levels, all MR credits have similar [PERSON]'s \(\delta\) effect sizes between possible and achieved points. Building life-cycle impact reduction, Building product disclosure and optimization (BPD & O)-environmental product declarations, BPD & O-sourcing of raw materials, and BPD & O-material ingredients credits showed low achievement for each level of certification. The Building life-cycle impact credit requires performing a life cycle assessment (LCA) of the whole building [5], which can be  
\begin{table}
\begin{tabular}{c c c c c c} \hline \hline \multirow{2}{*}{**Credit**} & \multirow{2}{*}{
\begin{tabular}{c} **Possible** \\ **Points** \\ \end{tabular} } & \multicolumn{4}{c}{**Achieved Points**} \\ \cline{3-6}  & & **Certified** & **Silver** & **Gold** & **Platinum** \\ \hline Enhanced commissioning & \multirow{2}{*}{6} & 3.0 \(\pm\) 3.0 & 4.0 \(\pm\) 2.0 & 4.0 \(\pm\) 2.0 & 6.0 \(\pm\) 3.3 \\  & & 0.86 & 0.91 & 0.91 & 0.48 \\ \hline Advanced energy & \multirow{2}{*}{1} & 0.0 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 1.0 \(\pm\) 0.0 \\  & & 0.64 & 0.41 & 0.45 & **0.00** \\ \hline Demand response & \multirow{2}{*}{2} & 0.0 \(\pm\) 0.0 & 0.0 \(\pm\) 0.0 & 0.0 \(\pm\) 0.0 & 1.0 \(\pm\) 2.0 \\  & & 1.00 & 0.95 & 0.91 & 0.60 \\ \hline Renewable energy & \multirow{2}{*}{3} & 0.0 \(\pm\) 2.0 & 0.0 \(\pm\) 2.0 & 3.0 \(\pm\) 2.8 & 3.0 \(\pm\) 0.0 \\  & & 0.73 & 0.77 & _0.36_ & **0.00** \\ \hline Enhanced refrigerant & \multirow{2}{*}{1} & 0.0 \(\pm\) 1.0 & 0.5 \(\pm\) 1.0 & 1.0 \(\pm\) 1.0 & 0.0 \(\pm\) 1.0 \\   management & & 0.64 & 0.50 & _0.45_ & 0.60 \\ \hline Green power and carbon & \multirow{2}{*}{2} & 0.0 \(\pm\) 1.0 & 0.0 \(\pm\) 2.0 & 2.0 \(\pm\) 2.0 & 2.0 \(\pm\) 0.0 \\   offsets & & 0.77 & 0.59 & _0.45_ & **0.00** \\ \hline Optimize energy & \multirow{2}{*}{18} & 13.0 \(\pm\) 8.0 & 11.5 \(\pm\) 9.0 & 17.0 \(\pm\) 6.3 & 18.0 \(\pm\) 0.0 \\   performance & & 0.82 & 0.82 & 0.64 & **0.00** \\ \hline \hline \end{tabular} Notes: Effect size is considered to be: very high if \(|\delta|<\) 0.147 (bold font), high if \(0.147<|\delta|<\) 0.33 (bold italic font), medium if \(0.33<|\delta|<\) 0.474 (italic font), and low if \(|\delta|\geq\) 0.474 (normal font).  
\end{table}
Table 5: Credit points achieved for Energy and Atmosphere category of LEED-NCv4 projects: median \(\pm\) IQR (25 th–75 th) and Cliff’s \(\delta\) effect size between possible and achieved points in a credit.  
costly due to requiring LCA-related consultants, software tools, and datasets. Three other credits, BPD & O-Environmental product declarations, BPD & O-sourcing of raw materials, and BPD & O-material ingredients, also require the use of products and materials with available LCA [5]. In contrast with these low-achieved credits, Construction and demolition waste management had high or very high achievement in each level of certification.