The nurse wishes to measure the number of cases of staph ...

[londonang]

The nurse wishes to measure the number of cases of staph infections that occur in a hospital over the course of 1 year per total client-days during that year. Which measure should the nurse use?
 
  A) Incidence density
  B) Prevalence rate
  C) Relative risk ratio
  D) Specific rate

Question 2

Which correctly defines sensitivity?
 
  A) The ratio of the incidence rate in the exposed group to the incidence rate in the nonexposed group
  B) Ability of a test to correctly identify people who have a health problem or the probability of testing positive if the health problem is truly present
  C) Variations measured in hours, days, weeks, or months and commonly used to quantify outbreaks of infectious disease
  D) Ability of a test to correctly identify people who do not have a health problem or the probability of testing negative if the health problem is truly absent

[xiazhe]

Answer to Question 1

Ans: A
Feedback:
Incidence density is the use of a person-time denominator in the calculation of rates. A person-day reflects one person at risk for 1 day, and a person-year represents one person at risk for 1 year. Prevalence rate is the measure of the number of people in a given population who have an existing condition at a given point in time. Relative risk ratio is the ratio of the incidence rate in the exposed group to the incidence rate in the nonexposed group. Specific rates are detailed rates that are calculated using the number of people in the smaller subgroups of the population in the denominator.

Answer to Question 2

Ans: B
Feedback:
Sensitivity is the ability of a test to correctly identify people who have a health problem or the probability of testing positive if the health problem is truly present. Relative risk ratio is the ratio of the incidence rate in the exposed group to the incidence rate in the nonexposed group. Short-term changes are variations measured in hours, days, weeks, or months and are commonly used to quantify outbreaks of infectious disease. Specificity is the ability of a test to correctly identify people who do not have a health problem or the probability of testing negative if the health problem is truly absent.

[londonang]

Gracias!

[diana chang]

Excellent