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Table 1 Study population demographic characteristics (n = 82,784)

From: Incidence of adverse events in an integrated US healthcare system: a retrospective observational study of 82,784 surgical hospitalizations

Age (mean)

55.7 years

Age (% distribution)

 

  18-24 years

4.1%

  25-44 years

21.6%

  45-64 years

44.2%

  65-84 years

27.5%

  85+ years

2.6%

Gender

 

  Female

47.5%

  Male

52.5%

Race

 

  White

77.4%

  African American

18.8%

  Asian

0.6%

  Other

1.4%

  Not reported

1.8%

Ethnicity

 

  Hispanic

0.8%

  Non-Hispanic

85.7%

  Not reported

13.5%

Insurance type

 

  Commercial

27.9%

  Medicare

29.0%

  Medicaid

27.8%

  Other

39.1%

Year of discharge

 

  2006

17.6%

  2007

25.0%

  2008

28.5%

  2009

27.9%