Method:
borderline personality disorder, BPD
This clustered, partially nested, randomised controlled trial was conducted at Orygen, Melbourne, Australia. Carers of young people (aged 15–25 years) with borderline personality disorder features were randomly assigned as a unit in a 1:1 ratio, balanced for young person’s sex and age, to receive a 15-day intervention comprising: (1) the three-session, in-person, Making Sense of BPD (MS-BPD) multi-family group programme, plus two self-directed online psychoeducational modules (MS-BPD + Online, 