Distance traveled to abortion has been studied in several other countries as well, and these studies suggest that rural and minority groups travel furthest to obtain abortion care. Studies in Canada found, as in the US, geographic disparities in abortion access due to clustering of provision in urban centers . One national study found that 18% of women traveled more than 100 km (62 miles) to reach an abortion clinic and that younger woman and Aboriginal women traveled significantly further for services than older and white women . A review of studies examining barriers to abortion access in Australia found that interstate travel for abortion was common, rural access to abortion was limited, and that greater travel distances were associated with greater costs . In New Zealand, a study of access to first trimester abortion found that women in regions without an abortion provider had to travel on average 137 miles each way to reach abortion services, and that regions without a provider had higher than average native (Maori) populations .