Depression in children and young people: identification and management

What is the clinical and cost effectiveness, post-treatment and at longer-term follow‑up, of psychological therapies in children aged 5 to 11 years with mild or moderate to severe depression?

What is the clinical and cost effectiveness, post-treatment and at longer-term follow‑up, of supported digital cognitive–behavioural therapy (CBT) compared with unsupported digital CBT in young people aged 12 to 18 years with mild depression, and what are the key components of the interventions that influence effectiveness?

What is the clinical and cost effectiveness, post-treatment and at longer-term follow‑up, of family therapy, psychodynamic psychotherapy and interpersonal psychotherapy for adolescents (IPT‑A) compared with each other and with individual CBT in young people aged 12 to 18 years with moderate to severe depression?

What is the clinical and cost effectiveness, post-treatment and at longer-term follow‑up, of a brief psychosocial intervention as reported by the IMPACT trial, but delivered by practitioners other than psychiatrists and in other settings, including primary care, to young people aged 12 to 18 years with mild or moderate to severe depression?

What is the clinical and cost effectiveness, post treatment and at longer-term follow‑up, of behavioural activation compared with other psychological therapies in children aged 5 to 11 years and young people aged 12 to 18 years with mild or moderate to severe depression?