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Table 1 Baseline patient characteristics

From: One-year resource utilisation, costs and quality of life in patients with acute respiratory distress syndrome (ARDS): secondary analysis of a randomised controlled trial

Characteristic All patients (N = 795) 1-year survivors (N = 388) 1-year non-survivors (N = 407) P value
Age—years [SD] 55.4 [16.8] 50.2 [15.6] 60.4 [16.4] <0.001
Female—no. (%) 300 (37.7) 148 (38.1) 152 (37.4) 0.8168
APACHE II score [SD]a 21.8 [6.1] 20.3 [5.7] 23.2 [6.0] <0.001
PaO2:FiO2 ratio—KPa [SD] 15.1 [5.0] 16.0 [5.2] 14.2 [4.6] <0.001
Prime condition: Pneumonia/pneumonitis—no. (%) 466 (58.6) 220 (56.7) 246 (60.4) 0.2849
Surgery admission—no. (%) 108 (13.6) 64 (16.5) 44 (10.8) 0.0194
ICU length of stay—days [SD] 17.0 [16.5] 19.7 [15.5] 14.4 [16.9] <0.001
Hospital length of stay—days [SD]b 33.6 [43.1] 47.2 [48.6] 20.9 [32.3] <0.001
  1. APACHE Acute Physiology and Chronic Health Evaluation, FiO2 fraction of inspired oxygen and PaO2 partial pressure of arterial oxygen
  2. aAPACHE II score calculated for 765 patients only
  3. bFive patients with missing information on hospital discharge