## 3 Results
### Relationship between Ear Size and Wearing Comfort
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**Dependent Variable** & **Cluster** & **N** & **Mean** & **SD** & \(t\) & \(p\) \\ \hline \multirow{2}{*}{Comfort of concha area} & Small & 80 & 4.71 & 1.50 & \multirow{2}{*}{\(-0.86\)} & \multirow{2}{*}{\(0.39\)} \\  & Large & 72 & 4.93 & 1.61 & & \\ \hline \multirow{2}{*}{Comfort of ear canal area} & Small & 80 & 4.44 & 1.69 & \multirow{2}{*}{\(-1.91\)} & \multirow{2}{*}{\(0.06\)} \\  & Large & 72 & 4.94 & 1.56 & & \\ \hline \multirow{2}{*}{Pain of concha area while wearing} & Small & 80 & 2.48 & 1.46 & \multirow{2}{*}{\(0.40\)} & \multirow{2}{*}{\(0.69\)} \\  & Large & 72 & 2.38 & 1.61 & & \\ \hline \multirow{2}{*}{Pain of ear canal area while wearing} & Small & 80 & 2.69 & 1.53 & \multirow{2}{*}{\(1.08\)} & \multirow{2}{*}{\(0.28\)} \\  & Large & 72 & 2.42 & 1.55 & & \\ \hline \multirow{2}{*}{Pain of concha after usage} & Small & 80 & 2.69 & 1.45 & \multirow{2}{*}{\(1.73\)} & \multirow{2}{*}{\(0.09\)} \\  & Large & 72 & 2.28 & 1.47 & & \\ \hline \multirow{2}{*}{Pain of ear canal area after usage} & Small & 80 & 2.70 & 1.63 & \multirow{2}{*}{\(1.29\)} & \multirow{2}{*}{\(0.20\)} \\  & Large & 72 & 2.38 & 1.46 & & \\ \hline \multirow{2}{*}{Pain of concha area while operating} & Small & 80 & 2.70 & 1.55 & \multirow{2}{*}{\(0.25\)} & \multirow{2}{*}{\(0.81\)} \\  & Large & 72 & 2.64 & 1.49 & & \\ \hline \multirow{2}{*}{Pain of ear canal area while operating} & Small & 80 & 2.85 & 1.77 & \multirow{2}{*}{\(0.21\)} & \multirow{2}{*}{\(0.84\)} \\  & Large & 72 & 2.79 & 1.67 & & \\ \hline \multirow{2}{*}{Pressure of concha area} & Small & 80 & 3.11 & 1.61 & \multirow{2}{*}{\(0.53\)} & \multirow{2}{*}{\(0.60\)} \\  & Large & 72 & 2.97 & 1.67 & & \\ \hline \multirow{2}{*}{Pressure of ear canal area} & Small & 80 & 3.41 & 1.85 & \multirow{2}{*}{\(0.26\)} & \multirow{2}{*}{\(0.79\)} \\  & Large & 72 & 3.33 & 1.84 & & \\ \hline \multirow{2}{*}{Fixation of concha area} & Small & 80 & 4.29 & 1.80 & \multirow{2}{*}{\(-1.01\)} & \multirow{2}{*}{\(0.31\)} \\  & Large & 72 & 4.57 & 1.61 & & \\ \hline \multirow{2}{*}{Fixation of ear canal area} & Small & 80 & 4.23 & 1.90 & \multirow{2}{*}{\(-2.03\)} & \multirow{2}{*}{\(0.04\)} \\  & Large & 72 & 4.81 & & \\ \hline \end{tabular} Note. *: \(p<0.05\).  
\end{table} 
Table 13: Results of independent sample \(t\)-test for wearing comfort difference according to incisura intertragica–antitragus length clusters. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Dependent Variable** & **Cluster** & **N** & **Mean** & **SD** & \(t\) & \(p\) \\ \hline \multirow{2}{*}{Pain of ear canal area while wearing} & Small & 80 & 2.80 & 1.61 & \multirow{2}{*}{\(2.06\)\({}^{*}\)} & \multirow{2}{*}{\(0.04\)} \\  & Large & 72 & 2.29 & 1.42 & & \\ \hline \multirow{2}{*}{Pain of concha after usage} & Small & 80 & 2.63 & 1.49 & \multirow{2}{*}{\(1.17\)} & \multirow{2}{*}{\(0.25\)} \\  & Large & 72 & 2.35 & 1.45 & & \\ \hline \multirow{2}{*}{Pain of ear canal area after usage} & Small & 80 & 2.98 & 1.70 & \multirow{2}{*}{\(3.74\)\({}^{***}\)} & \multirow{2}{*}{\(0.00\)} \\  & Large & 72 & 2.07 & 1.21 & & \\ \hline \multirow{2}{*}{Pain of concha area while operating} & Small & 80 & 2.69 & 1.45 & \multirow{2}{*}{\(0.14\)} & \multirow{2}{*}{\(0.89\)} \\  & Large & 72 & 2.65 & 1.59 & & \\ \hline \multirow{2}{*}{Pain of ear canal area while operating} & Small & 80 & 2.91 & 1.70 & \multirow{2}{*}{\(0.68\)} & \multirow{2}{*}{\(0.50\)} \\  & Large & 72 & 2.72 & 1.75 & & \\ \hline \multirow{2}{*}{Pressure of concha area} & Small & 80 & 4.29 & 1.80 & \multirow{2}{*}{\(0.68\)} & \multirow{2}{*}{\(0.50\)} \\  & Large & 72 & 4.57 & 1.61 & & \\ \hline \multirow{2}{*}{Fixation of concha area} & Small & 80 & 4.23 & 1.90 & \multirow{2}{*}{\(1.23\)} & \multirow{2}{*}{\(0.22\)} \\  & Large & 72 & 4.81 & 1.59 & & \\ \hline \end{tabular} Note. *: \(p<0.05\).  
\end{table} 
Table 12: _Cont._