Methods
We assessed children’s symptoms and the functioning of the two scales using quantitative and qualitative methods. At the time of this research, the WATCH trial was still underway, and participants’ data were blinded to study arm.This research was overseen by six Human Research Ethics Committees (HRECs) with the lead being the Aboriginal Health & Medical Research Council Ethics Committee (AHMRC) (13-2074/13). Written informed consent to participate in this study was obtained from all research officers and the carers of child participants.