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. Author manuscript; available in PMC: 2016 Oct 1.
Published in final edited form as: Crit Care Med. 2015 Oct;43(10):2085–2093. doi: 10.1097/CCM.0000000000001159

Table 1.

Comparison of 30-day readmissions, length of stay, hospital mortality, and costs of care between congestive heart failure, acute myocardial infarction, and sepsis from 2009–2011 in California.

CHF 2009–2011
AMI
Sepsis

All hospitalizations 208,794 135,980 310,565

Index hospitalizations 193,153 105,684 240,198

30 day readmissions 45,651 18,707 48,988

30 day readmission rate 23.6% 17.7% 20.4%

Length of stay (Days)
 All hospitalizations*
  Mean (SD) 4.8 (5.8) 4.5 (5.9) 8.7 (11.5)

  Median (IQR) 3 (2–6) 3 (2–5) 6 (3–10)

 Index hospitalizations
  Mean (SD) 4.6 (5.2) 4.8 (5.4) 8.5 (10.3)

  Median (IQR) 3 (2–6) 3 (2–6) 6 (3–10)

 30 day readmissions
  Mean (SD) 5.2 (6.1) 4.4 (6.3) 10.6 (13.0)

  Median (IQR) 4 (2–6) 3 (1–5) 7 (4–13)

Hospital Mortality
 All hospitalizations* 3.1% 5.6% 15.9%

 Index hospitalizations N/A N/A N/A

 30 day readmissions 1.7% 1.4% 6.5%

Costs per Hospitalization (US $)
 All hospitalizations*
  Mean (SD) 14,553 (21,693) 23,683 (26,406) 26,614 (35,395)

  Median (IQR) 8,870 (5,455–15,655) 16,550 (9,095–27,734) 15,462 (8,443–30,180)

 Index hospitalizations
  Mean (SD) 13,843 (19,356) 24,492 (24,855) 24,318 (31,306)

  Median (IQR) 8,738 (5,424–15,202) 17,810 (10,591–28,706) 14,829 (8,334–27,741)

 30 day readmissions
  Mean (SD) 15,081 (23,769) 22,874 (29,422) 30,646 (37,932)

  Median (IQR) 8,973 (5,465–15,965) 14,075 (7,036–26,200) 18,794 (10,260–35,386)
1

All hospitalizations: Hospitalizations after excluding age < 18, missing length of stay and patient identifier variable, admissions to rehabilitation or psychiatric facilities

Index hospitalizations: Hospitalizations after above exclusions that did not result in transfer to another acute care hospital or patient death. All hospitalizations occurring in December of each calendar year were also excluded to allow all index admissions to have a 30 day window for rehospitalization.

30-day readmission: Hospitalizations with at least 1 subsequent hospital stay within 30 days of an index hospitalization.

Abbreviations: CHF, congestive heart failure; AMI, acute myocardial infarction; SD, standard deviation; IQR, interquartile range; US, United States; $, dollars