Published in:
01-05-2016 | Original Article
Cognitive function in cancer survivors: analysis of the 1999–2002 National Health and Nutrition Examination Survey
Authors:
A. M. Williams, M. C. Janelsins, E. van Wijngaarden
Published in:
Supportive Care in Cancer
|
Issue 5/2016
Login to get access
Abstract
Purpose
Cancer and its treatment may affect cognitive function through a number of direct and indirect pathways including inflammation, lipid metabolism, vascular damage, and changes in the blood–brain barrier. While short-term treatment-related cognitive changes are well recognized, only limited research is available in older, long-term survivors of cancer.
Methods
Using NHANES data from 1999 to 2002, 408 cancer survivors and 2639 non-cancer participants aged 60 years old and above were identified. Cognitive function of these groups were compared using the Digit Symbol Substitution Test (DSST) and self-reported problems with memory or confusion.
Results
After adjustment for covariates, cancer survivors scored, on average, 1.99 points lower on the DSST compared to non-cancer survivors (−1.99, 95 % CI −3.94, −0.05). Cancer survivors also had 17 % higher odds of self-reporting problems with memory or confusion (OR 1.17, 95 % CI 0.89, 1.53).
Conclusion
In this nationally representative sample of older US adults, cancer survivors had lower DSST scores than non-survivors and had more self-reported problems with memory or confusion.