## 3 Results  
Responses were obtained from 1173 students (876 females-74.7% and 297 males-25.3%). The mean age of the group was 20.9 \(\pm\) 2.9 years (age range: 17-27 years). Among the whole group, there were 665 medical students (56.7%) and 508 (43.3%) students of \begin{table}
\begin{tabular}{c c} \hline \hline
**Criterion** & **Question** \\ \hline C1 & How often does the mask strictly cover your mouth and nose at work? \\ \hline C2 & How often do you happen to touch the mask at work? \\ \hline C3 & How often do you take the mask off properly at work (without touching its anterior surface)? \\ \hline C4 & How often do you clean/disinfect your hands after taking off/touching the mask at work? \\ \hline C5 & How often do you replace the mask when it dampens at work? \\ \hline C6 & How often do you reuse single-use masks? \\ \hline C7 & How often do you dispose of single-use masks after one use at work? \\ \hline \hline \end{tabular}
\end{table} 
Table 1: Questions used in the survey based on WHO guideline criteria concerning the correct use of face masks. other faculties not related to health sciences (non-medical students). More than half of the respondents declared sensitive skin and the presence of facial dermatosis (52.3% and 57.5%, respectively). Atopic predisposition was reported by 33.8%, and 20.2% experienced face mask-induced itch. There was no significant difference in the prevalence of the abovementioned signs and symptoms between medical and non-medical students (Table 2). Among the whole group of respondents, only three students (0.3%) were compliant with all WHO criteria on the correct use of face mask. There was no significant difference between medical and non-medical students (0.2% and 0.4%, respectively) (Table 3). \begin{table}
\begin{tabular}{c c c} \hline \hline \multicolumn{2}{c}{**Characteristics**} & \multicolumn{2}{c}{**All Patients (_n_ = 1173_)**} \\ \hline \multirow{2}{*}{Sex} & Men & 297 (25.3\%) \\ \cline{2-3}  & Women & 876 (74.7\%) \\ \hline \multirow{2}{*}{Age (years)} & Mean & 21 \\ \cline{2-3}  & Standard deviation & 2.9 \\ \hline \multirow{2}{*}{University} & Medical & 665 (56.7\%) \\ \cline{2-3}  & Non-medical & 508 (43.3\%) \\ \hline \multirow{2}{*}{Sensitive skin} & All & 613 (52.3\%) \\ \cline{2-3}  & Medical & 335 (50.4\%) \\ \cline{2-3}  & Non-medical & 278 (54.72\%) \\ \hline \multirow{2}{*}{Facial dermatosis} & All & 674 (57.5\%) \\ \cline{2-3}  & Medical & 369 (55.5\%) \\ \cline{2-3}  & Non-medical & 305 (60\%) \\ \hline \multirow{2}{*}{Atopic predisposition} & All & 396 (33.8\%) \\ \cline{2-3}  & Medical & 221 (33.2\%) \\ \cline{2-3}  & Non-medical & 175 (34.5\%) \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Group characteristics. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \multirow{2}{*}{**Criterion**} & **All Students** & **Medical Students** & **Non-Medical Students** & \multirow{2}{*}{_p_} \\  & **(_n_ = 1173_)** & **(_n_ = 665_)** & **(_n_ = 508_)** & \\ \hline All criteria & 3 & 1 & 2 & \\  & (0.3\%) & (0.2\%) & (0.4\%) & 0.71590 \\ \hline C1 & 952 & 570 & 382 & \\  & (81.2\%) & (85.7\%) & (75.2\%) & **0.00001** \\ \hline C2 & 33 & 19 & 14 & \\  & (2.8\%) & (2.9\%) & (2.8\%) & 0.91725 \\ \hline C3 & 394 & 259 & 135 & \\  & (33.6\%) & (39.0\%) & (26.6\%) & **0.00001** \\ \hline C4 & 263 & 150 & 113 & \\  & (22.4\%) & (22.6\%) & (22.2\%) & 0.89888 \\ \hline C5 & 330 & 203 & 127 & \\  & (28.1\%) & (30.5\%) & (25.0\%) & **0.03700** \\ \hline C6 & 288 & 126 & 162 & \\  & (24.6\%) & (19.0\%) & (31.9\%) & **0.00000** \\ \hline C7 & 309 & 158 & 151 & \\  & (26.3\%) & (23.8\%) & (29.7\%) & **0.02156** \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Adherence to WHO guideline criteria concerning the correct use of face masks among students. Upon analyzing particular criteria, strict covering of the nose and mouth with a face mask (C1) was most commonly complied with (81.2%). On the other hand, avoidance of touching the mask with hands (C2) appeared to be the most difficult criterion to comply with (2.8%).