An ICU admission is associated with increased resource utilization including hospital readmissions, with many due to an ambulatory care sensitive condition. Lower socioeconomic status and higher severity of illness are associated with increased resource utilization.

After an ICU visit patients seem to use hospital resources over outpatient resources. Interventions to improve and coordinate care after ICU discharge are needed.

Among 4,074 ICU survivors, 45% had increased resource utilization.

Readmission rates at 30-day, 90-day, and 1-year were 15%, 26%, and 43%.

The proportion of patients with a hospital admission increased significantly in the post-ICU period.

Mortality, hospital readmissions, and outpatient visits were assessed during one calendar year (2012) in a multipayer healthcare system.

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