Frailty, Cognitive Function and Health-related Quality of Life in Older Adults With Advanced Chronic Kidney Disease.

Inclusion Criteria: * Patients age 65 years or older. * CKD stage 4 and 5 who were identified by two consecutive measurements of estimated glomerular filtration rate (eGFR) \<30 mL/min/1.73 m2 separated by more than 3 months. Exclusion Criteria: * Patients younger than 65 years old. * Chronic kidney disease stages 1,2, and 3. * Dialysis dependence * History of kidney transplantation. * Initial visit with the health care provider. * Recent acute kidney injury. * Patients who had been hospitalized for more than 2 months before the visit (because long hospitalization might affect the degree of frailty) * Patients with myocardial infarction and cerebrovascular accident 3 months before the assessment * Patients who are blind or with limb amputation. * Patients who refuse to participate.