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Table 2 Length of intensive care unit (ICU) stay attributable to clinically important gastrointestinal bleeding

From: The attributable mortality and length of intensive care unit stay of clinically important gastrointestinal bleeding in critically ill patients

ICU length of stay

Median difference

(days)

(95% confidence interval)

Crude comparison

 

   Non-survivors

14.0 (8.6–19.4)

   Overall

17.2 (13.2–21.3)

Matched cohort method

 

   Non-survivors

0.6 (-5.1–6.3)

   Overall

3.8 (-0.01–7.6)

Model-based matched cohort method

 

   Matching on mortality status

5.1 (0.3–9.9)

   Overall

6.7 (2.7–10.7)

Regression method

 

   Unadjusted

7.9 (1.4–14.4)

   Adjusted*

6.2 (1.0–11.4)

  1. The model-based matched cohort probably yields the best estimate of the length of ICU stay. See Table 3 for advantages and disadvantages of these methods. * Adjusted for age, APACHE II score, admitting diagnosis, duration of ventilation, Multiple Organ Dysfunction Score, and bleeding status.