The study tested a new method to measure how easy it is for people to reach primary health care services in Australia. They used different catchment sizes based on how remote an area is. At first, they found some problems with sudden changes in catchment sizes. But after making adjustments, they found a smoother way to transition between different levels of remoteness. This new method could help make sure people in rural areas have better access to health care services, which could be useful for creating health policies at a national level.