“…For the assessment of mental health, diverse variables were taken into account, both positive or negative, and neutral, such as health-related quality of life [5], or mental health status [18]. Among positive variables characterizing mental health, there were: happiness [5,7,21] and self-esteem [15], while among negative variables characterizing mental health, there were: loneliness [1,6], general difficulties [8], feeling worried [6], anxiety [1,25], stress and distress [7,11,21], depressive symptoms [7,9,11,23,29], depression [1,10,13,14,17,25], suicidal ideation [1,6], suicidal plan [1], suicide attempts [1].…”