The PHQ 9 score can theoretically reach a maximum value of 27, and a value higher than 4 indicates an increased level of mental depressive disorder. When focusing on gender characteristics, a slightly higher value of central tendencies was measured in females (95% CI: Female = 5.42–6.09; Male = 5.21–6.16) and in terms of income, a higher value was identified in the category of students with lower income (95% CI: ≤160 = 5.58–6.37; 161+ = 5.11–5.87).
