[The FRASNET study: identification of clinical and social factors of renal failure in an elderly population].

Chronic renal failure is an epidemic in elderly patients. Older population have an increased prevalence of frailty and sarcopenia, associated with a wide range of adverse health outcomes such as falls, hospitalization, disability. Describe the sociodemographic and clinical variables of an elderly Lombard population and identify predictors of renal insufficiency. Cross-sectional observational study conducted in hospitals, in recreational centers for the elderly, in the Universities of the Third Age of the provinces of Milan and Monza-Brianza conducted through a convenience sampling of 1250 subjects over the age of 65. The study identified living alone, annual individual income < € 10,000, polypharmacy, sarcopenia and frailty as predictors of chronic kidney failure. The sample has a mean eGFR of 71.74 mL/min/1.73m2 (SD ± 16.56). Older people living alone are more likely to develop CRI (P = 0.031, confidence interval, CI [1.031-1.905]) as well as having an income < € 10,000 (P = 0.002, CI [0.392-0.923]). Taking more than 11 drugs a day increases the probability of having chronic renal failure by 16 times (P = 0.012, CI [1.155-3.16]). Sarcopenia and frailty increase the likelihood of having chronic renal failure (CRI) (P = 0.001, CI [1.198-2.095]). Identifying predictors of chronic kidney failure is a key step in introducing preventive measures and providing better care to the elderly population.