Susannah K Wallace1, Nisha K Rathi, Dorothy K Waller, Joe E Ensor, Sajid A Haque, Kristen J Price, Linda B Piller, Barbara C Tilley, Joseph L Nates. 1. 1Department of Clinical Analytics and Informatics, The University of Texas MD Anderson Cancer Center, Houston, TX. 2Department of Critical Care, The University of Texas MD Anderson Cancer Center, Houston, TX. 3Houston Methodist Cancer Center, Houston Methodist Research Institute, Houston, TX. 4Department of Epidemiology, Human Genetics, and Environmental Sciences, The University of Texas Health Science Center School of Public Health, Houston, TX. 5Department of Biostatistics, The University of Texas Health Science Center School of Public Health, Houston, TX.
Abstract
OBJECTIVE: To investigate ICU utilization and hospital outcomes of oncological patients admitted to a comprehensive cancer center. DESIGN: Observational cohort study. SETTING: The University of Texas MD Anderson Cancer Center. PATIENTS: Consecutive adults with cancer discharged over a 20-year period. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The Cochran-Armitage test for trend was used to evaluate ICU utilization and hospital mortality rates by primary service over time. A negative binomial log linear regression model was fitted to the data to investigate length of stay over time. Among 387,306 adult hospitalized patients, the ICU utilization rate was 12.9%. The overall hospital mortality rate was 3.6%: 16.2% among patients with an ICU stay and 1.8% among non-ICU patients. Among those admitted to the ICU, the mean (SD) admission Sequential Organ Failure Assessment score was 6.1 (3.8) for all ICU patients: 7.3 (4.4) for medical ICU patients and 4.9 (2.8) for surgical ICU patients. Hematologic disorders were associated with the highest hospital mortality rate in ICU patients (42.8%); metastatic disease had the highest mortality rate in non-ICU patients (4.2%); sepsis, pneumonia, and other infections had the highest mortality rate for all inpatients (8.5%). CONCLUSIONS: This study provides a longitudinal view of ICU utilization rates, hospital and ICU length of stay, and severity-adjusted mortality rates. Although the data arise from a single institution, it encompasses a large number of hospital admissions over two decades and can serve as a point of comparison for future oncological studies at similar institutions. More studies of this nature are needed to determine whether consolidation of cancer care into specialized large-volume facilities may improve outcomes, while simultaneously sustaining appropriate resource utilization and reducing unnecessary healthcare costs.
OBJECTIVE: To investigate ICU utilization and hospital outcomes of oncological patients admitted to a comprehensive cancer center. DESIGN: Observational cohort study. SETTING: The University of Texas MD Anderson Cancer Center. PATIENTS: Consecutive adults with cancer discharged over a 20-year period. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: The Cochran-Armitage test for trend was used to evaluate ICU utilization and hospital mortality rates by primary service over time. A negative binomial log linear regression model was fitted to the data to investigate length of stay over time. Among 387,306 adult hospitalized patients, the ICU utilization rate was 12.9%. The overall hospital mortality rate was 3.6%: 16.2% among patients with an ICU stay and 1.8% among non-ICU patients. Among those admitted to the ICU, the mean (SD) admission Sequential Organ Failure Assessment score was 6.1 (3.8) for all ICU patients: 7.3 (4.4) for medical ICU patients and 4.9 (2.8) for surgical ICU patients. Hematologic disorders were associated with the highest hospital mortality rate in ICU patients (42.8%); metastatic disease had the highest mortality rate in non-ICU patients (4.2%); sepsis, pneumonia, and other infections had the highest mortality rate for all inpatients (8.5%). CONCLUSIONS: This study provides a longitudinal view of ICU utilization rates, hospital and ICU length of stay, and severity-adjusted mortality rates. Although the data arise from a single institution, it encompasses a large number of hospital admissions over two decades and can serve as a point of comparison for future oncological studies at similar institutions. More studies of this nature are needed to determine whether consolidation of cancer care into specialized large-volume facilities may improve outcomes, while simultaneously sustaining appropriate resource utilization and reducing unnecessary healthcare costs.
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