Abstract
Aim
To study the epidemiological association between periodontitis and low cognitive performance amongst older adults, within a representative sample of the US population.
Materials and methods
Data from 2086 older adults (≥60 years old), representative of 77.1 million people, were retrieved from the NHANES 2011–2014 database. Periodontitis cases were identified and classified according to the AAP/CDC criteria (mild, moderate, and severe). Cognitive function was assessed through the Consortium to Establish a Registry for Alzheimer's disease (CERAD), the Animal Fluency (AFT), the Digit Symbol Substitution (DSST) tests, and the global cognition score. The lowest non-survey weighted quartile for each cognitive test was defined as low cognitive performance. Simple and multiple regression analyses were performed.
Results
Moderate and severe periodontitis were significantly associated with a low DSST performance (OR = 1.66, and OR = 2.97, respectively). Each millimeter of increase in mean CAL was associated with a lower AFT (OR = 1.44), DSST (OR = 1.86), and global cognition (OR = 1.50) performance.
Conclusions
The findings of the present study suggest the presence of an independent association between periodontitis and low cognitive performance amongst older adults (≥60 years old).
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