Medical conditions and physical function deficits among multiple primary cancer survivors

Survivors of multiple primary cancers make up a sizable proportion of all cancer survivors, yet little is known about the health of this population. We examined the prevalence of medical conditions and physical function deficits among multiple primary survivors compared with single primary survivors and individuals without a cancer history.

Participants were enrolled in the Cancer Prevention Study (CPS)-II Nutrition Cohort in 1992/1993. Prevalent medical conditions (diabetes, heart conditions, cerebrovascular conditions, emphysema/chronic bronchitis, osteoporosis, osteoarthritis), physical function limitations, use of a cane or walker, balance difficulties, and falls within the past year were assessed on a follow-up survey completed in 2011. We estimated age- and sex-adjusted prevalence ratios (PRs), comparing multiple primary survivors (N = 1003) to single primary survivors (N = 12,849) and participants without cancer (N = 63,578).

The prevalence of medical conditions did not differ substantially between multiple primary survivors and either comparison group. However, multiple primary survivors were more likely to report severe limitations in physical function than the single primary (PR = 1.48 (95% CI, 1.28-1.71)) and no-cancer (PR = 1.64 (95% CI, 1.42-1.88)) groups. Using a cane or walker and balance difficulties were also significantly more common among multiple primary survivors.

Despite a similar prevalence of comorbid medical conditions, severe functional limitations were significantly more common among multiple primary survivors than single primary survivors or individuals without cancer.

Assessment of functional status and treatment of physical deficits may be an especially critical component of care for older patients with a history of multiple cancer diagnoses.