Figure 2 shows the links between the categories of analysed variables (gender-income categories, interval disorder categories). In the case of gender-income and PSS, the moderate and high intervals of perceived stress are close to the categories of female students and the category of male students with lower incomes. In contrast, the low stress interval is closest to male students with higher incomes. In the case of gender-income and AUDIT, a certain indentation of the ZONE 4 is evident. When interpreting the other zones, a close link can be identified between the category of male students with higher incomes and the ZONE 3. Conversely, the category of male students with lower incomes is close to the ZONE 2. Finally, both categories of female students are concentrated around the ZONE 1.