CEDAR RAPIDS, Iowa - A national study by the University of Washington shows higher rates of smoking in rural Iowa counties. The study says some Iowa counties have double the smoking rates of others. However, the drop in smoking rates in some counties were significant.
In the report, Iowa's Dallas County had the seventh-fastest decline in smoking from 1996 through 2012, when it went from 19.4 percent to 10.9 percent of adults who smoke daily.
The report also shows that all Iowa counties have had declines in smoking.
The researchers used data from phone surveys taken for the federal Centers for Disease Control and Prevention.