Epidemiology Exam 1 Questions
with Accurate Answers
A 2007 study examined HIV infection among 1,500 incoming prisoners at the
Rahway Correctional Facility. Of the entering inmates, 42 tested positive for HIV.
The same study population was again tested for HIV after each inmate was
incarcerated for one year, in 2008. Two of the inmates who were originally HIV
negative now tested positive.
What is the period prevalence of HIV for 2007 - 2008 (the entire period of the
study)? correct answer (42+2)/(1,500) *100
A 2007 study examined HIV infection among 1,500 incoming prisoners at the
Rahway Correctional Facility. Of the entering inmates, 42 tested positive for HIV.
The same study population was again tested for HIV after each inmate was
incarcerated for one year, in 2008. Two of the inmates who were originally HIV
negative now tested positive.
What is the incidence proportion of HIV in this population in 2008? correct
answer (2/(1500-42)) x 100
A 2014 epidemiologic survey for Snow City, a winter resort destination with a
population of 80,000 persons at midyear, produced the following information:
- Number of skiing accidents in Snow City in 2014=600
- Number of persons injured from skiing in Snow City in 2014= 1,800
- Number of deaths from skiing in Snow City in 2014= 90
- Number of deaths from all causes in Snow City in 2014= 900
What was the crude death (mortality) rate per 100,000 for Snow City in 2014?
correct answer (900/80,000) * 100,000
, A 2014 epidemiologic survey for Snow City, a winter resort destination with a
population of 80,000 persons at midyear, produced the following information:
- Number of skiing accidents in Snow City in 2014=600
- Number of persons injured from skiing in Snow City in 2014= 1,800
- Number of deaths from skiing in Snow City in 2014= 90
- Number of deaths from all causes in Snow City in 2014= 900
What was the proportionate mortality ratio (%) due to skiing in Snow City in
2014? correct answer (90/900) * 100
Age-adjusted rates are not "real rates", but are a hypothetical number
constructed by using a population standard. correct answer True
An age-adjusted rate is a weighted average of which of the following? correct
answer Age-specific rates
Changing the duration of a disease can impact its prevalence. correct answer True
Choose the appropriate type of prevention: Education about the hazards of
cigarette smoking on healthy individuals. correct answer Primary prevention
Hill's criterion of biological plausibility refers to the existence of a dose-response
relationship correct answer False
with Accurate Answers
A 2007 study examined HIV infection among 1,500 incoming prisoners at the
Rahway Correctional Facility. Of the entering inmates, 42 tested positive for HIV.
The same study population was again tested for HIV after each inmate was
incarcerated for one year, in 2008. Two of the inmates who were originally HIV
negative now tested positive.
What is the period prevalence of HIV for 2007 - 2008 (the entire period of the
study)? correct answer (42+2)/(1,500) *100
A 2007 study examined HIV infection among 1,500 incoming prisoners at the
Rahway Correctional Facility. Of the entering inmates, 42 tested positive for HIV.
The same study population was again tested for HIV after each inmate was
incarcerated for one year, in 2008. Two of the inmates who were originally HIV
negative now tested positive.
What is the incidence proportion of HIV in this population in 2008? correct
answer (2/(1500-42)) x 100
A 2014 epidemiologic survey for Snow City, a winter resort destination with a
population of 80,000 persons at midyear, produced the following information:
- Number of skiing accidents in Snow City in 2014=600
- Number of persons injured from skiing in Snow City in 2014= 1,800
- Number of deaths from skiing in Snow City in 2014= 90
- Number of deaths from all causes in Snow City in 2014= 900
What was the crude death (mortality) rate per 100,000 for Snow City in 2014?
correct answer (900/80,000) * 100,000
, A 2014 epidemiologic survey for Snow City, a winter resort destination with a
population of 80,000 persons at midyear, produced the following information:
- Number of skiing accidents in Snow City in 2014=600
- Number of persons injured from skiing in Snow City in 2014= 1,800
- Number of deaths from skiing in Snow City in 2014= 90
- Number of deaths from all causes in Snow City in 2014= 900
What was the proportionate mortality ratio (%) due to skiing in Snow City in
2014? correct answer (90/900) * 100
Age-adjusted rates are not "real rates", but are a hypothetical number
constructed by using a population standard. correct answer True
An age-adjusted rate is a weighted average of which of the following? correct
answer Age-specific rates
Changing the duration of a disease can impact its prevalence. correct answer True
Choose the appropriate type of prevention: Education about the hazards of
cigarette smoking on healthy individuals. correct answer Primary prevention
Hill's criterion of biological plausibility refers to the existence of a dose-response
relationship correct answer False
