## 2 Materials and Methods
### Sizing System Development
#### 2.3.1 Segmenting the Size Section
In the cross-tabulation, the initial 100 sections were filtered down to 63 by removing hip-circumference sections 1, 2, and 10 and height section 1, which were the maximum-minimum extrema with a total appearance frequency of less than 2%. Next, 12 sections with an appearance frequency of 0% were deleted to filter the 63 sections to 51 (Figure 2a). Then, the sections were grouped based on the coverage rate of 2 to 6.5% to filter the 51 sections to 25 (Figure 2b). In the primary cross-tabulation analysis, 25 primary \begin{table}
\begin{tabular}{c c c c c c c c} \hline \hline \multirow{2}{*}{**Section**} & \multicolumn{2}{c}{**Height**} & \multirow{2}{*}{**Freq.**} & \multicolumn{2}{c}{**Hip Circumference**} & \multirow{2}{*}{**Freq.**} & \multicolumn{2}{c}{**Lower-Drop**} & \multirow{2}{*}{**Freq.**} \\  & **(mm)** & & & & **(mm)** & & & \\ \hline
1 & 1542–1573 & 1 & 796–827 & 1 & 0–20 & 10 \\ \hline
2 & 1573–1604 & 5 & 827–858 & 3 & 20–40 & 13 \\ \hline
3 & 1604–1635 & 10 & 858–889 & 17 & 40–60 & 21 \\ \hline
4 & 1635–1666 & 18 & 889–920 & 38 & 60–80 & 27 \\ \hline
5 & 1666–1697 & 22 & 920–951 & 47 & 80–100 & 32 \\ \hline
6 & 1697–1728 & 47 & 951–982 & 42 & 100–120 & 33 \\ \hline
7 & 1728–1759 & 38 & 982–1013 & 30 & 120–140 & 26 \\ \hline
8 & 1759–1790 & 32 & 1013–1044 & 10 & 140–160 & 19 \\ \hline
9 & 1790–1821 & 13 & 1044–1075 & 8 & 160–180 & 14 \\ \hline
10 & 1821–1852 & 13 & 1075–1106 & 3 & 180–199 & 4 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Division of important variable section. \begin{table}
\begin{tabular}{c c c c c c c c c c c c c} \hline \hline \multicolumn{12}{c}{**Section of Hip Circumference**} & \multirow{2}{*}{**Total**} \\  & & & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & 10 \\ \hline \multirow{4}{*}{1} & Freq. & 0 & 0 & 1 & 0 & 0 & 0 & 0 & 0 & 0 & 0 & 1 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 0.5\% & 0.0\% & 0.0\% & 0.0\% & 0.0\% & 0.0\% & 0.0\% & 0.5\% \\ \hline \multirow{4}{*}{2} & Freq. & 0 & 0 & 1 & 2 & 0 & 2 & 0 & 0 & 0 & 0 & 5 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 0.5\% & 1.0\% & 0.0\% & 1.0\% & 0.0\% & 0.0\% & 0.0\% & 0.0\% & 2.5\% \\ \hline \multirow{4}{*}{3} & Freq. & 1 & 1 & 1 & 3 & 2 & 1 & 0 & 0 & 0 & 10 \\ \cline{2-12}  & total \% & 0.5\% & 0.5\% & 0.5\% & 1.5\% & 1.0\% & 0.5\% & 0.0\% & 0.0\% & 0.0\% & 5.0\% \\ \hline \multirow{4}{*}{4} & Freq. & 0 & 0 & 2 & 8 & 3 & 3 & 2 & 0 & 0 & 0 & 18 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 1.0\% & 4.0\% & 1.5\% & 1.5\% & 1.0\% & 0.0\% & 0.0\% & 0.0\% & 9.0\% \\ \hline \multirow{4}{*}{5} & Freq. & 0 & 1 & 2 & 5 & 5 & 6 & 2 & 0 & 1 & 0 & 22 \\ \cline{2-12}  & total \% & 0.0\% & 0.5\% & 1.0\% & 2.5\% & 2.5\% & 3.0\% & 1.0\% & 0.0\% & 0.5\% & 0.0\% & 11.1\% \\ \cline{2-12}  & Freq. & 0 & 1 & 5 & 12 & 13 & 8 & 6 & 1 & 1 & 0 & 47 \\ \cline{2-12}  & total \% & 0.0\% & 0.5\% & 2.5\% & 6.0\% & 6.5\% & 4.0\% & 3.0\% & 0.5\% & 0.5\% & 0.0\% & 23.6\% \\ \hline \multirow{4}{*}{7} & Freq. & 0 & 0 & 1 & 8 & 9 & 10 & 7 & 3 & 0 & 0 & 38 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 0.5\% & 4.0\% & 4.5\% & 5.0\% & 3.5\% & 1.5\% & 0.0\% & 0.0\% & 19.1\% \\ \hline \multirow{4}{*}{8} & Freq. & 0 & 0 & 3 & 1 & 8 & 7 & 7 & 3 & 2 & 1 & 32 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 1.5\% & 0.5\% & 4.0\% & 3.5\% & 3.5\% & 1.5\% & 1.0\% & 0.5\% & 16.1\% \\ \hline \multirow{4}{*}{9} & Freq. & 0 & 0 & 1 & 1 & 3 & 1 & 3 & 2 & 1 & 1 & 13 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 0.5\% & 0.5\% & 1.5\% & 0.5\% & 1.5\% & 1.0\% & 0.5\% & 0.5\% & 6.5\% \\ \hline \multirow{4}{*}{10} & Freq. & 0 & 0 & 0 & 3 & 3 & 2 & 1 & 3 & 1 & 13 \\ \cline{2-12}  & total \% & 0.0\% & 0.0\% & 0.0\% & 1.5\% & 1.5\% & 1.5\% & 1.0\% & 0.5\% & 1.5\% & 0.5\% & 6.5\% \\ \hline \multirow{4}{*}{total} & Freq. & 1 & 3 & 17 & 38 & 47 & 42 & 30 & 10 & 8 & 3 & 199 \\ \cline{2-12}  & total \% & 0.5\% & 1.5\% & 8.5\% & 19.1\% & 23.6\% & 21.1\% & 15.1\% & 5.0\% & 4.0\% & 1.5\% & 100.0\% \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Results of primary cross-tabulation calculation.