*4.4. Statistical Analysis*

In the statistical study, Microsoft Excel 2018 was utilized for data analysis. The formulas employed included standard deviation (STDEV) and sample variance (VAR). The STDEV formula was applied to calculate the standard deviation for a sample of a population, while the VAR formula was used to determine the sample variance. The level of statistical significance was defined at *p* < 0.05.

**Author Contributions:** Conceptualization, E.O.B., N.B.D. and I.I.K.; methodology, E.V.N., E.O.B. and N.B.D.; validation, I.I.K.J., V.S.P. and A.I.B.; formal analysis, M.S.N.; investigation, E.V.N. and M.S.N.; resources, E.V.N. and M.M.S.; data curation, E.V.N., E.O.B. and V.S.P.; writing—original draft preparation, E.V.N. and M.M.S.; writing—review and editing, E.O.B. and A.I.B.; visualization, V.S.P. and M.S.N.; supervision, N.B.D., I.I.K.J. and I.I.K.; project administration, E.O.B., E.V.N. and M.M.S. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** The authors can provide any necessary information on the study upon request.

**Conflicts of Interest:** The authors declare no conflict of interest.

### **References**


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