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Table 1 Demographic data of the study cohort and all ICU patients between January 2003 and December 2004

From: Tissue Doppler in critical illness: a retrospective cohort study

Characteristic

Cohort (n = 94)

ICU patients (n = 2,695)

P

Female sex

28 (31%)

808 (30%)

≤1

Age (years)

61 ± 15

58 ± 17

0.065

APACHE III score

72 ± 25

53 ± 25

≤0.001

Length of ICU stay (days)

11.5 ± 11

3.5 ± 6.5

≤0.001a

Length of hospital stay (days)

32 ± 48

19 ± 29

0.01a

ICU mortality

22 (23%)

201 (7.5%)

≤0.001

Hospital mortality

31 (33%)

309 (11.5%)

≤0.001

  1. Results are expressed as mean ± standard deviation or number (percentage). aUnequal variance assumed (Levene's test P < 0.001). APACHE, Acute Physiology and Chronic Health Evaluation; ICU, intensive care unit; database.