Cognitive frailty in older cancer survivors and its association with health-related quality of life

Purpose This study aimed (1) to estimate the prevalence of cognitive frailty, (2) to identify factors associated with cognitive frailty and (3) to examine the association of cognitive frailty with health-related quality of life (HRQOL) in older cancer survivors. Methods This was a cross-sectional study. Participants were aged 65 or above, diagnosed with cancer and had completed cancer treatment. Measures on physical frailty, cognitive functioning and HRQOL were administered. Multiple linear regression models were used to examine the association of cognitive frailty with HRQOL. Results Among 293 recruited participants, 18.8% had a cognitive functioning decline, 8.9% were physically frail and 8.2% were cognitively frail. Regular exercise (OR = 0.383, p = 0.035) and shorter time since treatment completion were associated with less likelihood of cognitive frailty (OR = 1.004, p = 0.045). Cognitive frailty was significantly associated with global health status (β = −0.116; p = .044), physical functioning (β = −0.177; p = .002), social functioning (β = −0.123; p = .035) and fatigue symptoms (β = 0.212; p < .001) after adjusting for potential confounding variables. Conclusions Cognitive frailty, found in 8.2% of older cancer survivors, is associated with various dimensions of HRQOL. Longitudinal research examining the trajectory and impact of cognitive frailty on more diverse health outcomes in older cancer survivors is warranted. The findings improve service providers’ knowledge of cognitive frailty in older cancer survivors and inform surveillance and care for geriatric cancer survivorship.