Classified with unipolar depressive disorder by CAMHS clinician Self-reported depressive problems Transition recommendation Clinicians’ transition recommendation (% (n )) Recommended to discontinue treatment (% (n )) 20.2 (41) 17.8 (33) Recommended to continue treatment (% (n )) 58.6 (119) 62.2 (115) Recommended to remain in CAMHS 48.7 (58) 46.9 (54) Recommended to transition to AMHS 32.8 (39) 35.7 (41) Recommended to be treated by other MHS 18.5 (22) 17.4 (20) Missing 21.2 (43) 20.0 (37) Depression Unipolar depressive disorder classification (% ( )) 100 (203) 49.7 (92) Self-reported depressive problems (% ( )) Normal range ( ) 26.6 (54) — Subclinical range ( ) 14.8 (30) — Clinical range ( ) 45.3 (92) 100 (185) Missing 13.3 (27) — Sociodemographic characteristics Gender: female (% ( )) 72.9 (148) 76.8 (142) Highest level PC education (% ( )) Primary/secondary/vocational 40.9 (83) 40.5 (75) University 23.6 (48) 24.9 (46) Missing 35.5 (72) 34.6 (64) Psychopathology in biological parents (% ( )) No psychopathology 33.5 (68) 31.9 (59) Psychopathology in one or both biological parents 28.1 (57) 30.8 (57) Missing 38.4 (78) 37.3 (69) Severity and impairment Clinician-rated severity of psychopathology (M (SD)) 3.74 (1.35) 3.95 (1.33) Suicidal thoughts and behaviours (% ( )) None 47.3 (96) 35.7 (66) Suicidal thoughts and behaviours 44.8 (91) 64.3 (119) Missing 7.9 (16) — Lifetime suicide attempt (% ( )) No 41.9 (85) 43.8 (81) Yes 46.8 (95) 50.8 (94) Missing 11.3 (23) 5.4 (10) Psychotropic medication use (% ( )) No 26.6 (54) 29.7 (55) Yes 58.6 (119) 65.9 (122) Missing 14.8 (30) 4.3 (8) Need for continued treatment Self-reported need for continued treatment (% ( )) No 24.1 (49) 16.8 (31) Yes 68.0 (138) 83.2 (154) Missing 7.9 (16) — Parent-reported need for continued treatment (% ( )) No 9.4 (19) 6.5 (12) Yes 57.1 (116) 59.5 (110) Missing 33.5 (68) 34.1 (63)