PUBH 401 Quiz 2 and 3 prep Questions
And Actual Answers.
Define morbidity - Answer the number of ill/sick people in the population
Formula to calculate Incidence - Answer # of new cases of a disease occurring in the
population during a specified period of time / # of persons at risk of developing the disease
during that period time x 1000
define prevalence - Answer The number or proportion of cases of a particular disease or
condition present in a population at a given time.
A rate ideally is a proportion in which - Answer change over time is considered, but in practice,
often used interchangeably with proportion, without reference to time.
•One of the most important aspects of the incident rate is that it measures the ________ cases
of disease in a population. - Answer new
The incidence rate can tell us the "_______" in a population - Answer risk
if one is calculating the incidence rate for prostate cancer, only men who are at ________ for
developing the disease should be included - not women - Answer risk
The other important concept for the denominator is that it includes _______. - Answer time
Cumulative Incidence - Answer The incidence is calculated by using a period of time during
which all of the individuals in the population are considered to be at risk for the outcome.
incidence density - Answer 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
An example of a prevalence rate - Answer if we wanted to calculate cancer prevalence, it
would be the number of individuals with cancer at a specified period of time divided by the
, Incidence is generally used for __________diseases, prevalence is used for more __________ ,
conditions or attributes of ill-health - Answer acutely acquired diseases, permanent states
Prevalence can never exceed - Answer 100%
What is surveillance? - Answer surveillance is a continuous and systematic process of
collection, analysis, interpretation, and dissemination of descriptive information for monitoring
health problems
Active Surveillance - Answer staff actively go out to hospitals and physicians and other health
care agencies to record any cases of the disease
Passive Surveillance - Answer reporting often falls on the health care provider, but many don't
have time to report diseases and therefore active surveillance is needed.
At an initial examination in Oxford, Massachusetts, migraine headache was found in 5 of 1,000
men aged 30 to 35 years and in 10 of 1,000 women aged 30 to 35 years. The inference that
women have a two times greater risk of developing migraine headache than do men in this age
group is: - Answer Incorrect, because no data for a comparison or control group are given
A prevalence survey conducted from January 1 through December 31, 2012, identified 1,000
cases of schizophrenia in a city of 2 million persons. The incidence rate of schizophrenia in this
population is 5/100,000 persons each year. What percentage of the 1,000 cases were newly
diagnosed in 2012? ____ - Answer 10%
Which of the following is an advantage of active surveillance? - Answer More accurate due to
reduced reporting
burden for health care providers
What would be the effect on age-specific incidence rates of uterine cancer if women with
hysterectomies were excluded from the denominator of the calculations, assuming that there
are some women in each age group who have had hysterectomies? - Answer The rates would
tend to increase
A survey was conducted among the non-hospitalized adult population of the United States
And Actual Answers.
Define morbidity - Answer the number of ill/sick people in the population
Formula to calculate Incidence - Answer # of new cases of a disease occurring in the
population during a specified period of time / # of persons at risk of developing the disease
during that period time x 1000
define prevalence - Answer The number or proportion of cases of a particular disease or
condition present in a population at a given time.
A rate ideally is a proportion in which - Answer change over time is considered, but in practice,
often used interchangeably with proportion, without reference to time.
•One of the most important aspects of the incident rate is that it measures the ________ cases
of disease in a population. - Answer new
The incidence rate can tell us the "_______" in a population - Answer risk
if one is calculating the incidence rate for prostate cancer, only men who are at ________ for
developing the disease should be included - not women - Answer risk
The other important concept for the denominator is that it includes _______. - Answer time
Cumulative Incidence - Answer The incidence is calculated by using a period of time during
which all of the individuals in the population are considered to be at risk for the outcome.
incidence density - Answer 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
An example of a prevalence rate - Answer if we wanted to calculate cancer prevalence, it
would be the number of individuals with cancer at a specified period of time divided by the
, Incidence is generally used for __________diseases, prevalence is used for more __________ ,
conditions or attributes of ill-health - Answer acutely acquired diseases, permanent states
Prevalence can never exceed - Answer 100%
What is surveillance? - Answer surveillance is a continuous and systematic process of
collection, analysis, interpretation, and dissemination of descriptive information for monitoring
health problems
Active Surveillance - Answer staff actively go out to hospitals and physicians and other health
care agencies to record any cases of the disease
Passive Surveillance - Answer reporting often falls on the health care provider, but many don't
have time to report diseases and therefore active surveillance is needed.
At an initial examination in Oxford, Massachusetts, migraine headache was found in 5 of 1,000
men aged 30 to 35 years and in 10 of 1,000 women aged 30 to 35 years. The inference that
women have a two times greater risk of developing migraine headache than do men in this age
group is: - Answer Incorrect, because no data for a comparison or control group are given
A prevalence survey conducted from January 1 through December 31, 2012, identified 1,000
cases of schizophrenia in a city of 2 million persons. The incidence rate of schizophrenia in this
population is 5/100,000 persons each year. What percentage of the 1,000 cases were newly
diagnosed in 2012? ____ - Answer 10%
Which of the following is an advantage of active surveillance? - Answer More accurate due to
reduced reporting
burden for health care providers
What would be the effect on age-specific incidence rates of uterine cancer if women with
hysterectomies were excluded from the denominator of the calculations, assuming that there
are some women in each age group who have had hysterectomies? - Answer The rates would
tend to increase
A survey was conducted among the non-hospitalized adult population of the United States
