Which measure is most important for evaluating the performance of classifiers, models that predict class membership?
a. Root mean squared error (RMSE)
b. Area under the receiver operating characteristic (ROC) curve
c. Percentage of correctly classified cases
d. Hosmer-Lemeshow statistic
ANS: B
The area under the receiver operating characteristic (ROC) curve is the most important overall measure of classifier performance.
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When assessing patients who are victims of a chemical agent attack, the nurse is aware that assessment findings vary based on the type of chemical agent. The chemical sulfur mustard is an example of what type of chemical warfare agent?
A) Nerve agent B) Blood agent C) Pulmonary agent D) Vesicant
The nurse is inundated with victims brought to the emergency department after exposure to anthrax
The nurse is assigned to care for an apparently terminal patient showing signs and symptoms of septicemia, hemorrhagic meningitis, and respiratory distress. What intervention by the nurse would be most appropriate for this patient? a. Administer packed red blood cells (PRBCs). b. Provide palliative care. c. Administer an anticoagulant. d. Administer the antitoxin.
A patient desiring to begin a very-low-calorie diet (VLCD) for rapid weight reduction is concerned about the safety of the diet. What information should the nurse provide to the patient?
1. VLCDs are not recommended for people over age 50. 2. VLCDs result in significant losses of muscle mass in response to the protein restriction. 3. VLCDs are safe for patients who have a lower body mass index and need to lose a small amount of weight rapidly. 4. VLCDs are safest for middle-aged and senior patients.
Select the most appropriate comment by the nurse when a depressed patient says, "What's the use in going on?"
a. "Are you thinking about suicide?" b. "I am not sure I understand what you are saying." c. "Keep your hope alive. It's always darkest just before light." d. "Tell me more about your activities before you got depressed."