## 3 Results
### Auditory Function  
The auditory function parameters' descriptive statistics and the K-MoCA correlation results are presented on the left side of Table 5. The factor loadings respective to the parameters that make up auditory PCs, and their K-MoCA correlation results, are presented on the right side of Table 5. The sentence recognition results were highly correlated with the cognitive score, with the highest correlation coefficient observed in the case of SRS of the better ear. None of the other parameters were significantly correlated with the K-MoCA score. PCA resulted in three auditory components, one for overall hearing level (including PTA and SRT results), one for word recognition (including WR better, WR average, and WR total number of mistakes), and one for sentence recognition (including all the SR results). The sentence recognition component was the only component significantly correlated with the MoCA score.  
\begin{table}
\begin{tabular}{c c c c c c} \hline
**Parameter** & **MEAN (SD)** & **R2 (_p-Value_)** & **PC** & **Loading** & **R2 (_p-Value_)** \\ \hline CSC at 3 m * & 16.2 (5.6) & 0.021 (0.045) & & 0.929 & \\ CSC at 4 m & 11.7 (6.2) & 0.017 (0.067) & & 0.907 & \\ CSC at 2 m & 20.8 (4.6) & 0.011 (0.151) & \
\begin{tabular}{c} Corrected \\ vision * \\ \end{tabular} & 0.901 & 0.023 (0.028) \\ CSC at 1.6 m & 22.8 (3.6) & 0.009 (0.214) & & 0.853 & \\ VABC & 0.8 (0.3) & 0.009 (0.206) & & 0.837 & \\ \hline CSU at 2 m & 21.4 (5.4) & \textless{}0.001 (0.958) & & 0.869 & \\ CSU at 1.6 m & 18.8 (6.6) & 0.001 (0.642) & & 0.866 & \\ CSU at 3 m & 14.1 (6.6) & \textless{}0.001 (0.770) &
\begin{tabular}{c} Uncorrected \\ vision \\ \end{tabular} & 0.824 & \textless{}0.001 (0.821) \\ CSU at 4 m & 9.5 (6.8) & \textless{}0.001 (0.925) & & 0.714 & \\ VABU & 0.7 (0.3) & \textless{}0.001 (0.952) & & 0.665 & \\ \hline \end{tabular}
\end{table}
Table 4: Participants’ visual function characteristics.  
\begin{table}
\begin{tabular}{c c c c c c} \hline
**Parameter** & **MEAN (SD)** & **R2 (_p-Value_)** & **PC** & **Loading** & **R2 (_p-Value_)** \\ \hline SRW total number of mistakes * & 1.9 (2.0) & 0.084 (\textless{}0.001) & & \(-\)0.946 & \\ SRW average * & 97.6 (2.4) & 0.084 (\textless{}0.001) & & 0.946 & \\ SRS total number of mistakes * & 1.9 (1.8) & 0.085 (\textless{}0.001) & Sentence & \(-\)0.939 & \\ SRS average * & 90.3 (9.1) & 0.085 (\textless{}0.001) & Recognition * & 0.939 & \\ SRS better * & 94.9 (8.4) & 0.106 (\textless{}0.001) & & 0.933 & \\ SRW better * & 99.0 (1.8) & 0.077(0.001) & & 0.898 & \\ \hline SRT average & 24.2 (12.3) & 0.011 (0.152) & & 0.952 & \\ SRT better & 19.8 (11.2) & 0.008 (0.240) & \multirow{2}{*}{\begin{tabular}{c} Hearing level \\ 0.910 \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} 0.923 \\ 0.910 \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} 0.007 (0.232) \\ 0.910 \\ \end{tabular} } \\ PTA better & 25.0 (11.9) & 0.017 (0.058) & & 0.910 & \\ PTA better & 20.9 (10.5) & 0.014 (0.094) & & 0.897 & \\ \hline WR better & 82.2 (12.6) & 0.009 (0.188) & \multirow{2}{*}{\begin{tabular}{c} Word \\ 0.015 (0.084) \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} 0.900 \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} 0.900 \\ \(-\)0.898 \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} 0.001 (0.690) \\ \end{tabular} } \\ WR total number of mistakes & 11.2 (6.4) & 0.015 (0.084) & & 0.853 & \\ WR average & 77.5 (12.8) & 0.014 (0.099) & & 0.837 & \\ \hline \end{tabular}
\end{table}
Table 5: Participants’ auditory function characteristics.