Despite some differences shown in e-Table 5, the median age at onset of specific mental disorders maps on a continuum, with no clear clustering across different disorders. Descriptively, the earliest median age of onset was observed for phobias/separation anxiety, ASD, ADHD, social anxiety disorders (8-13 years), followed by anorexia nervosa, bulimia nervosa, OCD, binge eating, cannabis use disorders (17-22 years), later schizophrenia, personality and alcohol use disorders (25-27 years), and, finally, PTSD, depressive disorder, GAD, bipolar disorder, and ATPD (30-35 years).
