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Table 4 Description of outcomes in the propensity-matched sample (n = 534)

From: Epidemiology and patterns of tracheostomy practice in patients with acute respiratory distress syndrome in ICUs across 50 countries

  Tracheostomy (n = 267) No tracheostomy (n = 267) P value
Number (%) or median (Q1–Q3) Number (%) or median (Q1–Q3)
Days of mechanical ventilation
 All patients 22 [13–33.5] 8 [4–12] <.0001
 Patient alive at hospital discharge 22 [13.5–33] 6 [3–11] <.0001
Ventilator-free days
 All patients 0 [0–11] 18 [0–25] <.0001
 Patient alive at hospital discharge 7 [0–15.5] 23 [18–26] <.0001
Length of ICU stay (days)°
 All patients 11 [5–24] 8 [5–14] <.0001
 Patient alive at hospital discharge 12 [6–25] 8 [5–14] 0.0002
Length of hospital stay (days)°
 All patients 24 [9–43] 17 [10–31] 0.0190
 Patient alive at hospital discharge 31 [15.5–50.5] 23 [13–38] 0.0325
Hospital mortality
 28-day* 61 (22.9) 85 (31.8) 0.0197
 60-day* 78 (29.3) 97 (36.3) 0.0814
 90-day* 81 (30.5) 102 (38.2) 0.0549
Limitation of life-sustaining therapies or measures decision 53 (19.9) 59 (22.1) 0.5900
  1. Statistical tests accounted for the matched nature of the sample (paired t test or Wilcoxon signed-rank test for continuous variables, McNemar’s test for dichotomous variables)
  2. °For tracheostomized patients, length of stay was valuated from the “approximate” date of tracheostomy
  3. *Mortality was evaluated according to the vital status at 28/60/90 days from acute respiratory distress syndrome onset or from the “nearest recorded” date of tracheostomy for non-tracheostomized and tracheostomized patients, respectively. If the patient was discharged alive before 28/60/90 days, we considered the patient as alive