Fig. 2From: Changes in hemodialysis catheter management after introduction of the end-stage renal disease prospective payment systemQuarterly rates and 95% confidence intervals for thrombus/fibrin sheath removal claims, standardized for age, sex, race, dual eligibility, primary cause of ESRD, ESRD duration, and Liu comorbidity index (using Q1–2011 as the reference). CI, confidence interval; ESRD, end-stage renal disease; PPS, prospective payment systemBack to article page