Measurement of the Quality of Life in End-Stage Renal Failure

Abstract
To the Editor: In their review of continuous ambulatory peritoneal dialysis, Nolph et al. (June 16 issue)1 mention the use of measures of the quality of life in comparing different treatments for end-stage renal failure. However, drawing firm conclusions from existing studies is difficult for two main reasons.First, comparisons between different treatment groups have frequently failed to take into account the fact that patients are assigned to particular treatments not at random but on the basis of psychosocial as well as clinical factors, which can themselves influence the quality of life. Under such circumstances, observed differences even in "objective" . . .