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Table 6 Univariate association and multivariate model for prediction of ICU admission and in-hospital mortality

From: Abnormal vital signs are strong predictors for intensive care unit admission and in-hospital mortality in adults triaged in the emergency department - a prospective cohort study

  Univariate association Multivariate model
  Admission to ICU In-hospital mortality Admission to ICU In-hospital mortality
  OR CI P OR CI P OR CI P OR CI P
SpO 2 (%)             
   95-100 Reference    1.0    Reference    Reference   
   90-94 2.35 1.31-4.20 < 0.01 4.78 3.17-7.22 < 0.0001 1.49 0.79-2.82 0.21 2.79 1.73-4.52 < 0.0001
   80-89 7.49 3.86-14.51 < 0.0001 13.00 7.77-21.79 < 0.0001 3.76 1.78-7.96 0.001 3.73 1.89-7.37 < 0.0001
   < 80 8.42 1.88-36.17 < 0.01 20.44 7.27-57.47 < 0.0001 5.48 1.16-25.84 0.03 9.01 2.18-37.26 0.002
RR (min-1)             
   8-25 Reference    1.0       Reference   
   26-30 3.76 1.97-7,20 < 0.0001 4.26 2.50-7.26 < 0.0001     1.89 0.10-3.58 0.052
   31-35 5.92 2.08-16.87 < 0.001 10.55 5.01-22.21 < 0.0001     4.96 2.00-12.25 0.001
   > 35 9.11 3.49-23.80 < 0.0001 14.82 7.13-30.82 < 0.0001     6.41 2.59-15.89 < 0.0001
BP (mmHg)             
   90- Reference    1.0       Reference   
   80-89 4.97 1.50-16.38 < 0.01 12.26 5.73-26.4 < 0.0001     5.07 1.69-15.16 0.004
   < 80 3.22 0.43-24.32 0.26 10.56 3.49-31.99 < 0.0001     3.87 0.73-20.71 0.113
HR (min-1)             
   < 40 6.51 0.84-50.50 0.07 3.46 0.45-26.65 0.23       
   40-49 1.41 0.20-10.33 0.74 2.32 0.72-7.53 0.16 2.2 0.51-9.41 0.29    
   50-110 Reference    1.0    Reference      
   111-120 3.83 2.05-7.18 < 0.0001 2.03 1.11-3.73 0.02 3.19 1.62-6.29 0.001    
   121-130 8.91 4.68-16.95 < 0.0001 3.88 1.98-7.58 < 0.0001 6.17 3.51-10.83 < 0.0001    
   > 130 8.14 4.07-16.28 < 0.0001 2.50 1.08-5.80 0.033       
GCS             
   15 Reference    1.0    Reference    Reference   
   14 3.57 1.82-7.00 < 0.0001 3.33 1.80-6.16 < 0.0001 2.77 1.32-5.75 0.006 1.56 0.73-3.39 0.253
   9-13 2.02 0.73-5.61 0.18 6.32 3.57-11.18 < 0.0001 1.29 0.45-3.71 0.63 3.72 1.97-7.03 < 0.0001
   < 8 5.21 5.24-24.91 < 0.0001 24.60 13.65-44.36 < 0.0001 4.93 1.29-12.64 0.001 10.97 4.90-24.56 < 0.0001
Age (yrs) 1.02 1.01-1.03 < 0.002 1.06 1.04-1.07 < 0.0001 1.01 1.00-1.02 0.048 1.05 1.03-1.06 < 0.0001
  1. ICU: Intensive Care Unit, SpO2 : saturation of peripheral oxygen, RR: respiratory rate, BP: systolic blood pressure, HR: heart rate, GCS: Glasgow Coma Score
  2. Reference: SpO2 = 95-100; RR = 8-25; BP > 90; HR 50-110; GCS = 15
  3. Age is expressed as continuous covariate. The OR at e.g. 1.02 represents the increased risk of ICU admission being 1 year older