ICU mortality and variables associated with ICU survival in Poland: A nationwide database study

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Abstract

BACKGROUND

Recently published international comparison data across European countries revealed high mortality rates in Polish ICUs.

OBJECTIVES

Estimation of the rate of ICU mortality and identification of variables associated with ICU survival in Poland.

DESIGN

Retrospective analyses of a database reporting ICU stays in Poland.

SETTINGS AND PATIENTS

The study included data from all adult patients admitted to an ICU in Poland from 1 January 2012 to 31 December 2012.

MAIN OUTCOME MEASURES

ICU mortality and variables associated with ICU survival.

RESULTS

A total of 48 282 patients were treated in 347 ICUs (mean age 63.1 ± 16.8 years, 59% men) with 20 278 deaths (42.0%). Variables associated with ICU survival were: tertiary level of hospital care [relative risk (RR) 0.86, 95% confidence interval (CI) 0.80 to 0.92, P < 0.001]; high annual patient volume in the ICU (RR 0.9995 patient year−1, 95% CI 0.9994 to 0.9996, P < 0.001); younger patient age (RR 1.025 year−1, 95% CI 1.024 to 1.026, P < 0.001); female sex (RR 0.92, 95% CI 0.88 to 0.96; P < 0.001); and lower number of comorbidities (RR 1.33, 95% CI 1.31 to 1.35, P < 0.001).

CONCLUSION

ICU mortality was high in Poland. Structural variables, such as the level of hospital care and annual patient volume, may be associated with ICU survival.

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