The Nauru files set out as never before the assaults, sexual abuse, self-harm attempts, child abuse and living conditions endured by asylum seekers held by the Australian government, painting a picture of routine dysfunction and cruelty. The Guardian’s analysis of the files reveal that children are vastly over-represented in the reports. More than half of the 2,116 reports – a total of 1,086 incidents, or 51.3% – involve children, although children made up only about 18% of those in detention on Nauru during the time covered by the reports, May 2013 to October 2015. The findings come just weeks after the brutal treatment of young people in juvenile detention in the Northern Territory was exposed, leading to the Australian prime minister, Malcolm Turnbull, announcing a wide-ranging public inquiry. The files raise stark questions about how information is reported on Nauru, one of Australia’s two offshore detention centres for asylum seekers who arrive by boat. They highlight serious concerns about the ongoing risks to children and adults held on the island. They show how the Australian government has failed to respond to warning signs and reveal sexual assault allegations – many involving children – that have never been previously disclosed. The most damning evidence emerges from the words of the staff working in the detention centre themselves – the people who compile the reports. These caseworkers, guards, teachers and medical officers have been charged with caring for hundreds of asylum seekers on the island.