Weight loss surgery in Australia 2014–15: Australian hospital statistics is a new report in AIHW’s series of summary reports describing the characteristics of hospitals and hospital services in Australia. In 2014–15, there were about 22,700 hospital separations involving one or more weight loss surgery procedures. Seven in 8 of these separations occurred in private hospitals. Around 18,000 of weight loss surgery separations, or 79%, were for female patients. From 2005–06 to 2014–15, the total number of weight loss surgery separations more than doubled, from about 9,300 to 22,700.