Which of the following variables has a significant effect on the predictive value of a test?
A) The doctor diagnosing the condition
B) The prevalence of the condition
C) The severity of the condition
D) The volume of the patient's sample tested
B
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A 52-year-old male has collapsed on his front porch and his family dialed 911. When you arrive, the daughter informs you that the patient has been down for approximately 8 minutes. Assessment reveals him to be in cardiac arrest. Which one of the following should you do immediately?
A) Contact medical direction for permission to use the AED given the downtime. B) Perform five cycles of CPR at a ratio of 15 compressions to two ventilations (single rescuer CPR). C) Hold CPR so that the AED can be checked and applied for use. D) Start CPR while the AED is readied for use.
A(n) ____________________ is the death of the embryo or fetus before 20 weeks' gestation with no loss of any of the products of conception.
Fill in the blank(s) with the appropriate word(s).
A patient with b+-thalassemia has, from that gene locus:
a. Variable but decreased b globin chain synthesis b. No b globin chain synthesis c. Variable but decreased g chain synthesis d. No gamma chain synthesis
+ 
= 
Answer the following statement true (T) or false (F)