“…[9][10][11][12][13] In several studies, the comorbidity occurs at multiple levels of symptom severity, for instance, low, moderate and high. 10,11 In some 9,12 but not other 10,11,13 studies, a depression or anxiety class only was also identified. Importantly, these studies have reported unique demographic and psychological characteristics of the comorbid class compared to other classes, for instance, being female, younger age, having fewer years of education, and experiencing more negative life events.…”