LONDON: About 4 percent of American adults aged 65 and older say they have been diagnosed with dementia, while the rate rises to 13 percent among people at least 85 years old, according to a national survey released Thursday.

The report was issued by US Centers for Disease Control and Prevention (CDC) 2022 was based on National Health Interview SurveyA nationally representative sample of US adults aged 18 and older. The 2019 survey added the option to report dementia, including Alzheimer’s diseaseIts answers questions on health conditions diagnosed by a doctor.

The CDC said 1.7 percent of adults ages 65 to 74 were diagnosed with dementia, a rate that increased with age. The reported rate of dementia among people ages 75 to 84 was 5.7 percent.

The agency conducted in-person or telephone interviews with 8,757 people aged 65 or older who were asked if they had been diagnosed with any type of dementia.

Ellen Kramaro, the report’s lead author, said projections for dementia diagnoses from 2019 to 2022 were generally similar, adding that they “don’t see this as a measure that’s going to have large changes from year to year.”

According to the Alzheimer’s Association, Alzheimer’s is the leading cause of dementia, in which there is impairment of memory, language, problem-solving and other cognitive abilities so severe that it interferes with daily life.

The report follows the arrival of new treatments designed to slow the progression of the brain-wasting disease, including treatments such as Biogen and Eisai’s Lekambi, which won U.S. approval last July. A similar treatment from Eli Lilly, donanemab, was unanimously backed by a U.S. Food and Drug Administration advisory panel on Monday and is widely expected to be approved.

The C.D.C. report revealed Dementia diagnosis The rate was lowest among people with a college degree, and highest among people with less than a high school education.

Several studies have shown that people with higher education have larger cognitive reserves that can temporarily delay Signs of dementia,

The overall estimates are similar to other national surveys, such as the 2021 Medicare Current Beneficiary Surveywhich is estimated to be about 3 percent Medicare beneficiaries People not living in nursing homes or long-term care facilities were diagnosed with Alzheimer’s or another type of dementia.