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Table 2 CPR knowledge scores and discriminative validity

From: Development, validation, and results of a survey to measure understanding of cardiopulmonary resuscitation choices among ICU patients and their surrogate decision makers

Question (%) Patients (n = 32) Surrogates (n = 37) Physicians (n = 20) P value
What do the letters CPR stand for? 41% 57% 90% .002
What is the purpose of CPR? 56 76 100 .002
When would members of the medical team start performing CPR? 75 84 95 .17
What treatments are used in CPR?     
  Chest compressions 81 92 90 .38
  Breathing assistance 56 76 95 .008
  Defibrillation 23 35 75 <.001
  Medications or fluids 9 24 90 <.001
Could correctly identify chest compressions and breathing assistance as components of CPR 12 27 85 <.001
What does intubation mean? 37 57 100 <.001
What does mechanical ventilation mean? 34 68 100 <.001
What are some possible complications of CPR? 59 76 100 .004
What do the letters “DNR” stand for? 41 59 100 <.001
What do the letters “DNI” stand for? 34 49 100 <.001
Response to full code 63 51 100 <.001
Response to DNR 69 81 100 .02
What does code status mean? 22 8 95 <.001
Total knowledge score, 0–15 points (IQR) 7(5–10) 9(7–12) 14.5(14–15) <.001
  1. CPR, cardiopulmonary resuscitation; DNR, do not resuscitate; DNI, do not intubate; IQR interquartile range.
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