A new study finds that more than half of all U.S. residents with chronic health conditions live in areas with no access to safe public transport, while a similar share of those with diabetes live in neighborhoods that have limited access to public transportation.

The study by the nonprofit Kaiser Health News found that nearly 6 in 10 U.P. residents have no access in some way to public transit.

The study, which looked at the locations of the U.K., Canada and Australia, also found that people living in low-income neighborhoods had the lowest rates of health care access, even after controlling for other factors such as education, income and geography.

The Kaiser Health news report also found the highest levels of obesity, hypertension and diabetes in high-income areas.

A spokesman for the Centers for Disease Control and Prevention told the Washington Post that a major problem with the findings was that they did not account for the factors that make up many of the neighborhoods studied.

“What this does is tell us that it’s very hard to determine the effect of these neighborhoods on health and safety in general,” CDC spokesman Patrick Foy told the Post.

“There are so many factors that are involved in people’s health, and that includes socioeconomic status and income.

So this is really an area of investigation.”