Alzheimer’s and other dementia diagnoses can vary by zip code, new study finds

Your home address could determine the likelihood of getting a dementia diagnosis, a new study suggests.

Researchers from University of Michigan Medical School analyzed Medicare claims for nearly five million older adults in regional health care markets across the country — focusing on the areas that had higher rates of diagnoses of Alzheimer’s disease and other dementias.

They found that in areas with a higher rate of diagnosis — known as "diagnosis intensity" — residents were twice as likely to find out they had the condition...