Study design
BPD
The study was a single-centre, parallel group, single-blinded, clustered, partially-nested RCT. Randomisation was by ‘unit’, that is, by the individual carer or group of carers per young person with BPD features. It was approved by the Melbourne Health Human Research Ethics Committee (HREC2014.105) and prospectively registered (ACTRN12616000304437). The trial protocol has been published (