Basal Physical Inactivity As An Independent Risk Factor For Early Death In Elderly Cancer Patients: A Prospective Brazilian Cohort Study With 608 Patients

e21534 Background:With the aging of the population, cancer in the elderly people is becoming an increasingly common and complex health problem, particularly in low-middle-income countries, where physical inactivity and obesity have also been challenging and correlated with cancer and aging. The aim of this study is to determine whether the baseline physical inactivity per International Physical Activity Questionnaire(IPAQ) is an independent factor of premature death in the first six months.Methods: prospective cohort study of elderly patients (≥ 60 years). Participants with a recent diagnosis of cancer were from eight community hospitals and one cancer center in Northeast Brazil and were recruited during their first medical appointment at the outpatient oncologic clinic. Sociodemographic and clinical variables were determined and baseline comprehensive geriatric assessment (CGA) was conducted including IPAQ and Time Up and Go test. Data were analyzed using multivariate Cox proportional hazards models, overall survival was estimated using the Kaplan–Meier method and survival curves were compared using the Log rank test. Results:From 2015-2016, 608 patients, mean age 71.9 (SD ±7.4; range 60-96), 50.7% male, were enrolled. Main diagnoses were prostate cancer (29.1%), digestive system cancer (25.5%) and breast cancer (16.0%). 40.3% were considered obese/overweight (BMI ≥ 27). 42.1% were considered physically inactive per IPAQ. The mean of the Time Up and Go test on the physically inactive group by IPAQ was of 13.11s (SD ± 6.5), and of 22.72s (SD± 16.7) on the physically active one. After adjustment for age, site of cancer and cancer stage, the multivariate regression Cox model showed that being physically inactive is an independent predictor for early death (HR = 2.35, 95% CI: 1.50‒ 3.66, p < 0.001).Conclusions:Physical inactivity at admission was identified as a significant predictor of risk for premature death in elderly cancer patients. The evaluation of the physical activity should be incorporated into regular geriatric assessment of elderly cancer patients.