The data are presented as means ± SD. The Shapiro-Wilk test was used to test the distribution of each variable with regard to normality, whereas the equality of variance was tested using the Levene’s test. Combinations of quality and linear predictors were analysed, with the use of dependent variables. A multivariateanalysis of variance was applied to the normally distributed data, producing both univariate and multivariate results, while the non-parametric Kruskal-Wallis one-way analysis of variance was applied for the other data. Likewise, Pearson’s correlation coefficient was calculated for the normally distributed data and Spearman’s rank correlation coefficient was calculated for the data with non-normal distribution. The level of statistically significant difference was set at 0.05 (p