[A case-control study of health benefits in patients with moderate renal failure].

In order to evaluate medical management in patients with renal failure before dialysis, we conducted a case-control study to analyze the health benefits in 914 moderate renal failure patients with Cockcroft clearance between 30 and 60 ml/min. Health benefits reimbursed by the Social Security in this population were compared with those in 1828 controls randomly chosen in the Social Security files but matched by age and gender. Mean age of the participants was 73+/-11 year-old, 67% were women, Cockcroft clearance was 48+/-8 ml/min.