Fall rates and counterintuitive findings
Results showed that significantly more of those with dementia than without experienced one or more falls (45.5% vs. 30.9%; P < .001).
In addition, a history of falling was significantly associated with subsequent falls among those with dementia (odds ratio, 6.20; 95% confidence interval, 3.81-10.09), as was vision impairment (OR, 2.22; 95% CI, 1.12-4.40) and living with a spouse versus alone (OR, 2.43; 95% CI, 1.09-5.43).
A possible explanation for higher fall risk among those living with a partner is that those living alone usually have better functioning, the investigators noted. Also, live-in partners tend to be of a similar age as the person with dementia and may have challenges of their own.
Interestingly, high neighborhood social deprivation was associated with lower odds of falling (OR, 0.55 for the highest deprivation scores; 95% CI, 0.31-0.98), a finding Dr. Okoye said was “counterintuitive.”
This result could be related to the social environment, she noted. “Maybe there are more people around in the house, more people with eyes on the person, or more people in the community who know the person. Despite the low economic resources, there could be social resources there,” she said.
The new findings underscore the idea that falling is a multidimensional phenomenon among older adults with dementia as well as those without dementia, Dr. Okoye noted.
Doctors can play a role in reducing falls among patients with dementia by asking about falls, possibly eliminating medications that are associated with risk of falling, and screening for and correcting vision and hearing impairments, she suggested.
They may also help determine household hazards for a patient, such as clutter and poor lighting, and ensure that these are addressed, Dr. Okoye added.
No surprise
Commenting on the study, David S. Knopman, MD, a clinical neurologist at Mayo Clinic, Rochester, Minn., said the finding that visual impairment and a prior history of falling are predictive of subsequent falls “comes as no surprise.”
Dr. Knopman, whose research focuses on late-life cognitive disorders, was not involved with the current study.
Risk reduction is “of course” a key management goal, he said. “Vigilance and optimizing the patient’s living space to reduce fall risks are the major strategies,” he added.
Dr. Knopman reiterated that falls among those with dementia are associated with higher mortality and often lead to loss of the capacity to live outside of an institution.
The study was supported by the National Institute on Aging. The investigators and Dr. Knopman report no relevant financial relationships.
A version of this article first appeared on Medscape.com.