Does Age Matter? Comparing Post-Treatment Psychosocial Outcomes in Young Adult and Older Adult Cancer Survivors with their Cancer-Free Peers

Abstract

Objective

Adolescents and Young Adult cancer survivors (AYA) are a unique sub-population with high levels of distress and unmet need. To date studies have not disentangled distress due to developmental life stage from distress due to cancer survivorship. This population-based study allowed a direct comparison between AYA cancer survivors, Older Adult (OA) cancer survivors and their cancer-free peers.

Methods

We combined four annual cycles of the Canadian Community Health Survey (CCHS, 2007-2010) to obtain a final sample of 239,316 respondents. We dichotomized the total sample into AYA(15-39yrs, n=83,770) and OA(40+, n=155,546). Two standardized questions identified cancer survivors(n=14,592). The self-reported outcomes of interest included self-perceived health and mental health, and health-care professional diagnosed mood and anxiety disorders. We used weighted logistic regression models to examine for associations, including an interaction term to assess for effect modification by age.

Results

After adjusting for confounders, cancer survivorship in AYA's was strongly associated with higher prevalence of both mood(OR 2.00, 95% CI 1.44-2.77) and anxiety(OR 2.20, 95% CI 1.70-2.86) disorders as compared to their cancer-free peers. OA survivors had a weaker association in the same direction(OR 1.10, 95% CI 1.01-1.21 and OR 1.15, 95% CI 1.02-1.30, respectively). AYA cancer survivors reported higher levels of poor self-perceived mental health than their cancer-free peers(OR 1.49, 95% CI 1.03-2.14) while there was no significant difference from cancer-free peers for OAs(OR 1.03, 95% CI 0.92-1.15).

Conclusions

AYA cancer survivors experience a significantly higher risk of psychosocial distress than both their cancer-free peers and Older Adult survivors.

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