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Table 2 Frequency of measurement and item sub-scores of candidate items for Bedside Paediatric Early Warning System score

From: Development and initial validation of the Bedside Paediatric Early Warning System score

All patients Controls Urgent ICU admission    
Item Proportion of times with measurements n/N Mean maximum subscore Proportion of observation times with measurements Mean maximum subscore Proportion of observation times with measurements Difference of means P AU ROC
HR 69.6% 0.87 52.9% 2.45 89.9% 1.58 <0.001 0.814
SBP 33.1% 0.78 23.0% 1.52 45.5% 0.74 <0.001 0.670
CRT 27.4% 0.50 22.3% 1.93 33.6% 1.43 <0.001 0.679
Pulse 18.7% 0.04   0.46   0.42 <0.001 0.627
RR 48.9% 0.64 32.0% 2.00 69.5% 1.36 <0.001 0.795
Respiratory effort 70.5% 0.20 81.7% 1.77 56.9% 1.56 <0.001 0.786
Saturation 65.1% 0.45 45.3% 1.18 89.2% 0.73 <0.001 0.677
Oxygen therapy 92.9% 0.40 92.3% 2.47 93.6% 2.07 <0.001 0.835
Bolus 13.1% 0.03 10.4% 0.11 12.9% 0.08 0.067 0.542
Temperature 25.2% 0.10 21.5% 0.55 0.323 0.45 <0.001 0.697
       0.000   
Infant behaviour scale 8.6% 0.900 5.2% 1.40 14.8% 0.500 0.075 0.563
Bromage sedation 79.5% 0.000 90.6% 0.67 60.4% 0.670 <0.001 0.583
Level of Consciousness 88.1% 0.900 94.8% 1.93 83.8% 1.033 0.004 0.629
  1. We present a description of the candidate items and their performance as discriminators between 60 case patients who were urgently admitted to the intensive care unit (ICU; without 'code blue' event) and 120 control patients who had neither urgent ICU admission nor code blue event. The first, third and fifth columns show the number of measurements expressed as a percentage of the number of times that any clinical measurement was made. For example heart rate (HR) measurements were recorded on 79.6% of occasions when any clinical measurement was made. For each candidate item the mean of the maximum sub-scores for case patients and control patients is presented. The maximum sub-score value from each patient was used in logistic regression to calculate the area under the receiver operating characteristics curve (AUROC) for each candidate item. The difference between these measurements is presented in the column titled difference of means and the P value represents the comparison between case and control patients using logistic regression. CRT = capillary refill time in seconds, RR = respiratory rate; SBP = systolic blood pressure.