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Table 4 Severity of illness scores in readmitted and non-readmitted patients

From: Risk prediction of ICU readmission in a mixed surgical and medical population

Variables Readmission (n = 27)   No. of readmission (n = 705)   p value
   95 % CI   95 %CI  
SAPS3, mean (SD) 56.0 (11.6) 51.4–60.6 50.5 (14.4) 49.5–51.6 0.50
MEWS, mean (SD) 2.3 (1.3)   1.8 (1.2)   0.03
SWIFT score, mean (SD) 16.1 (6.8) 13.4–18.9 13.0 (7.5) 12.4–13.6 0.03
  Length of ICU stay, dy, mean (SD) 3.0 (5.2) 1.2–4.5 2.8 (4.1) 2.6–3.4 0.88
  Source of admission n (%)      0.09
  Emergency 4 (15)   210 (30)   
  Other source 23 (85)   495 (70)   
  PaO2/FiO2 mmHg, mean (SD) 287 (109) 244–330 338 (119) 329–348 0.03
  GCS at discharge 14.7 (0.5) 14.5–14.9 14.7 (1.2) 14.6–14.8 0.91
  PCO2 mmHg, mean (SD) 41.0 (8.0) 37.8–44.2 39.7 (8.2) 39.1–40.3 0.42
  PCO2 mmHg, n (%)      0.04
  <45 18 (67)   526 (83)   
  >45 9 (33)   111(17)   
Modified SWIFT score, mean (SD) 13.5 (7.7)   17.6 (7.4)   0.007
SOFA score, mean (SD) 4.4 (2.8) 3.3–5.6 3.0 (2.2) 2.8–3.2 0.001
  Respiration 2.1 (1.1)   1.4 (1.1)   0.002
  Coagulation 0.8 (1.1)   0.4 (0.8)   0.07
  Liver 0.3 (0.6)   0.3 (0.7)   0.86
  Cardiovascular 0.3 (0.7)   0.3 (0.6)   0.78
  CNS 0.2 (0.5)   0.2 (0.6)   0.57
  Renal 0.8 (1.1)   0.4 (0.8)   0.06
  1. MEWS Modified Early Warning Score, SAPS3 Simplified Acute Physiology Score 3, SOFA Sequential Organ Failure Assessment score, SWIFT Stability and Workload Index for Transfer score