The authors studied 4 intermediate outcome measures (anemia, serum albumin level, functioning vascular access, and dialysis
adequacy) in a 5% random sample of all U.S. patients receiving long-term hemodialysis. Annual mortality rates in patients
who met 0, 1, 2, 3, or 4 quality measures were 29%, 25%, 21%, 14%, and 7%, respectively.