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The following data was collected in a survey of 8th graders

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Question

The following data was collected in a survey of 8th graders and summarize their cell phone status. /> No Cell Phone Conventional Cell Phone user Smart Phone user TotalBoys 55 65 35 155Girls 31 78 27 136Total 86 143 62 291
What proportion of the 8th graders have conventional cell phones?

 
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case-control studies

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Question

In case-control studies, the odds ratio is used as an estimate of the relative risk. In order for this

approximation to be reasonable, some conditions must be met. Which of the following conditions is not necessary in order to use the odds ratio to estimate the relative risk?

A. Cases are representative of all cases.

B. With respect to exposure, controls are representative of the population to which you want to generalize your results.

C. The exposure in question is rare in the population.

D. The event (disease) under study is rare in the population

 
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respiratory disease outbreaks

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Question

The best routinely available sources of data regarding the incidence of respiratory disease outbreaks and other

rapidly spreading conditions are:

A. reports of absenteeism from work and school

B. case registries

C. hospital records

D. death certificates

 
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True or False

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Question

True or False? When the duration of a disease becomes short and the incidence is high, the prevalence becomes

similar to incidence.

 
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