This is the most difficult place to get a good night sleep

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How well did you sleep last night? Well, that could depend on where you live.

A research study published in the journal "Sleep Health," using data collected by the Centers for Disease Control and Prevention, revealed that sleep quality could be affected by geographic location.

While the fast-paced lifestyles of urbanites seems like it would result in higher rates of poor sleep, the data determined that people living in the heart of Appalachia reported the worst rest patterns, according to The Washington Post.

Similarly, several counties in Tennessee, Kentucky, West Virginia, Ohio, and Virginia displayed higher rates of sleep difficulty.

The survey, which was conducted in 2009, asked 432,000 people how many days in the past thirty day period that they felt that they had enough rest.

The big business of sleep

Respondents were divided into two categories based on their answer: those who had reported poor sleep for more than 15 days and those that reported poor sleep for less than 15 days.

Researchers on the project noted that the 15 day marker was chosen to mirror criteria for doctors diagnosing insomnia in patients.

Within the counties that displayed the higher rates of poor sleep, upwards of 40 to 50 percent of respondents reported trouble sleeping 15 days or more during the month.

The study also found that populations of young, poor and unhealthy individuals were more likely to live in locations with higher rates of poor sleep.

However, this correlation doesn't necessarily suggest cause.

"It is unclear why this region, in particular, has such a high rate of insufficient sleep relative to other regions," authors of the studies said, according to The Washington Post.

Read the full article from The Washington Post.