Table 1.

Composition of the observed experience by calendar period among all children and adults initiating ESRD care from 1995 to 2013 in the United States

VariableCalendar Year
1995–19992000–20042005–20092010–2013
Person-years of observation
 Over all observation669,2641,621,412231,91752,355,051
 During treatment with dialysis606,3921,340,6451,790,1681,773,237
 During time with a functioning transplant62,872280,767529,007581,814
Age at first ESRD service, yr60 [47–71]58 [45–69]56 [44–67]56 [44–66]
Males, %54555657
Race, %
 White61606161
 Black32333231
 Other7778
Primary kidney disease, %
 Diabetes43414039
 Hypertension25242424
 GNa15161615
 Congenital anomalies of the kidneys and urinary tract1222
 Others15161718
 Missing1111
Socioeconomic quartile, %
 Lowest25242323
 Midlow20191919
 Midhigh23232424
 Highest28293030
 Missing4455
Primary insurance coverage, %
 Medicare/Medicaid55545149
 Employer/other28333535
 No coverage8101111
 Missing8335
Comorbidities,b %
 None34363738
 132313130
 2–327262524
 ≥47666
  • Because the unit of analysis was person-time rather than person, the characteristics presented are weighted by a factor derived from the number of person-years of observation and number of events and presented as weighted median [interquartile range] or percentage (for example, percentage of person-years contributed by men). Over-representation of the experience during the first year of ESRD care in the 1995–1999 period may influence the estimates for that period.

  • a Includes FSGS.

  • b Comorbidities counted included congestive heart failure, ischemic heart disease/coronary artery disease, myocardial infarction, cardiac arrest, cardiac dysrhythmia, pericarditis, atherosclerotic heart disease, other cardiac disease, cerebrovascular disease/cerebrovascular accident/transient ischemic attack, peripheral vascular disease, diabetes, chronic obstructive pulmonary disease, current tobacco use, malignancy, alcohol dependence, drug dependence, inability to ambulate, and inability to transfer. If no comorbidities were reported, it was assumed that there were none.