BBH 440 Exam 3 Questions With Correct
Answers
A researcher conducts a survey in which it is asked, "Are you now suffering from depression or
have you ever experienced an episode of depression in your life?" The rate that would be
obtained if the researcher then calculated the total number of in...
workers out of the total number of hours spent working at the site (for all workers). This rate
would be known as a/an: - answer✔incidence-density rate
If a mortality rate decreases after age adjustment, it suggests the study population is _____ than
the reference population. - answer✔older
A study looking at breast cancer in women compared cases with non-cases, and found that
75/100 cases did not use calcium supplements compared with 25/100 of the non-cases. What
would the equation to calculate the odds ratio be? HINT: I should set up a 2 x 2 table to answer
this. - answer✔(25x25)/(75x75)
In the direct method of age adjustment, after selecting a reference population the next step is to: -
answer✔apply age-specific rates from study population A to the reference population
In an experiment it is found that the odds ratio for a particular exposure and a disease is .48, and
it is significant. This suggests that: - answer✔the exposure is associated with increased
probability of having the disease
If the relative risk of a significant association is 0.83, what is the percent change of this result? -
answer✔17% decrease
morbidity - answer✔the state of being unhealthy or diseased in a population
measures of morbidity - answer✔ratio, proportion, rate
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