Data linkage enables evaluation of long-term survival after intensive care

Outcomes of intensive care are important to the patient and for assessment of benefit. Short-term outcomes after critical illness are well described, but less is known about long-term outcomes. This study describes the use of data linkage, combining intensive care unit (ICU) clinical data with admin...

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Bibliographic Details
Published in:Anaesthesia and intensive care 2006-06, Vol.34 (3), p.307-315
Main Authors: WILLIAMS, T. A, DOBB, G. J, FINN, J. C, KNUIMAN, M, LEE, K. Y, GEELHOED, E, WEBB, S. A. R
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Anesthesia
Anesthesia. Intensive care medicine. Transfusions. Cell therapy and gene therapy
APACHE
Biological and medical sciences
Cohort Studies
Comorbidity
Critical Care - statistics & numerical data
Data Collection
Databases as Topic
Female
Follow-Up Studies
Humans
Intensive Care Units - statistics & numerical data
Length of Stay
Male
Medical Record Linkage
Medical sciences
Middle Aged
Survival Rate
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Summary:Outcomes of intensive care are important to the patient and for assessment of benefit. Short-term outcomes after critical illness are well described, but less is known about long-term outcomes. This study describes the use of data linkage, combining intensive care unit (ICU) clinical data with administrative morbidity and mortality data, to assess long-term outcomes after treatment in ICU. The hospital-based cohort study was conducted in a 22-bed general ICU in a metropolitan teaching hospital. All patient admissions admitted to ICU from 1 January 1987 to 31 December 2002 were included. The prospective ICU clinical database with patient demographics, ICU diagnoses, severity of illness, daily assessment of organ failures and common daily treatments used was linked using probabilistic methods to the state-wide hospital morbidity and mortality databases to describe long-term survival. There were 26,019 ICU admissions (22,980 patients) with 25,972 records (99.8%) linked to a hospitalization event that included the index ICU admission. Unadjusted survival was 84.7% at 1 year decreasing progressively to 50.7% at 15 years. Age, type of admission, severity of illness (measured by Acute Physiologic and Chronic Health Evaluation (APACHE) II and the presence of organ failure), ICU length of stay, comorbidity (Chronic Health Evaluation and Charlson comorbidity index) and ICU admission diagnosis, were all associated with survival at 1, 3, 5, 10, and 15 year follow-up (P
ISSN:0310-057X
1448-0271
DOI:10.1177/0310057X0603400316