Scientific problems in clinical scales, as demonstrated in the Karnofsky index of performance status.
D004185:Disability Evaluation / Q000295:instrumentation*; D005069:Evaluation Studies as Topic; D006801:Humans; D007600:Judgment; D007676:Kidney Failure, Chronic / Q000628:therapy; D008499:Medical Records / Q000592:standards*; D010808:Physical Examination; D006435:Renal Dialysis