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Table 1 Patient characteristics across the quarterly cohorts (presenting only the first cohort in each year)

From: Changes in hemodialysis catheter management after introduction of the end-stage renal disease prospective payment system

  Q1–2008 Q1–2009 Q1–2010 Q1–2011 Q1–2012 Q1–2013 Q1–2014 Q1–2015
Cohort size, n 71,215 72,262 70,861 70,046 69,689 71,442 68,693 66,502
Age category, years, %
 18–54 24.7 25.7 26.2 26.0 25.3 24.0 23.5 22.4
 55–64 20.6 21.5 22.3 22.9 22.9 22.5 22.5 22.5
 65–74 26.5 25.8 25.3 25.5 25.9 26.7 27.6 28.7
 ≥ 75 28.2 27.0 26.2 25.5 25.9 26.8 26.4 26.4
Female, % 49.1 49.4 49.3 48.8 48.5 48.3 47.9 47.4
Race, %
 White 58.0 56.9 56.7 56.4 56.9 58.0 58.3 59.0
 Black 37.4 38.4 38.5 38.7 38.1 36.9 36.5 35.6
 Other 4.6 4.7 4.8 4.9 5.0 5.1 5.3 5.3
Dual eligibility, % 46.2 46.9 47.3 48.7 48.5 45.7 49.1 48.4
Primary cause of ESRD, %
 Diabetes 47.5 47.3 47.3 47.3 47.1 47.2 47.5 47.8
 Hypertension 29.6 29.6 29.8 30.0 30.1 30.7 31.0 31.0
 GN or cystic kidney disease 9.7 10.1 10.0 9.7 9.6 9.1 8.8 8.4
 Other 13.2 12.9 12.9 13.0 13.2 13.0 12.7 12.8
Dialysis vintage, %
 ≤ 90 days 16.8 16.4 16.9 16.7 19.7 21.6 21.5 22.5
 91-<  365 days 20.4 19.6 19.5 18.7 17.5 20.0 20.1 20.5
 1-<  3 years 37.7 31.0 27.0 27.2 25.5 22.6 22.7 23.0
 ≥ 3 years 25.1 33.0 36.5 37.5 37.4 35.8 35.6 34.0
Liu comorbidity index, %
 0 9.3 9.7 9.7 9.2 8.9 8.3 8.4 8.1
 1–4 35.5 35.4 35.4 34.3 34.4 34.5 34.9 34.6
 5–7 25.6 25.3 24.9 24.3 24.1 24.3 24.2 24.3
 ≥ 8 29.6 29.6 30.0 32.3 32.7 32.9 32.4 33.0
Comorbid conditions, %
 Atherosclerotic heart disease 39.9 39.3 39.4 40.6 41.3 41.6 40.8 41.0
 Congestive heart failure 51.3 50.7 50.2 50.7 50.5 50.3 49.5 50.5
 Cerebrovascular disease 18.1 18.2 18.1 18.5 18.4 18.1 18.2 17.9
 Peripheral vascular disease 33.6 33.4 33.5 34.8 34.3 33.9 33.9 34.1
 Other cardiac disease 26.7 26.9 27.7 29.4 30.4 30.5 30.5 31.4
 COPD 22.5 22.6 23.0 24.8 25.3 25.7 25.4 26.0
 Gastrointestinal bleeding 5.9 5.7 5.6 6.1 6.4 6.0 5.9 5.8
 Liver disease 5.6 5.7 5.4 6.2 6.5 6.2 5.8 5.2
 Dysrhythmia 21.8 21.7 22.2 24.9 25.4 26.8 26.9 27.9
 Cancer 9.5 9.4 9.5 9.6 9.8 9.7 9.8 9.8
 Diabetes 64.6 64.4 65.0 66.5 67.3 67.9 67.7 68.1
  1. COPD: chronic obstructive pulmonary disease; ESRD, end-stage renal disease; GN, glomerulonephritis