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