Test Bank For Gordis Epidemiology
7th Edition By David D Celentano; Moyses Szklo
Chapters 1 - 20 Complete
,TABLE OF CONTENTS
Chapter 1 Introduction
Chapter 2 The Dynamics of Disease Transmission
Chapter 3 The Occurrence of Disease
Chapter 4 The Occurrence of Disease
Chapter 5 Assessing the Validity and Reliability of Diagnostic and Screening Tests
Chapter 6 The Natural History of Disease
Chapter 7 Observational Studies
Chapter 8 Cohort Studies
Chapter 9 Comparing Cohort and Case-Control Studies
Chapter 10 Assessing Preventive and Therapeutic Measures
Chapter 11 Randomized Trials
Chapter 12 Estimating Risk
Chapter 13 More on Risk
Chapter 14 From Association to Causation
Chapter 15 More on Causal Inference
Chapter 16 Identifying the Roles of Genetic and Environmental Factors in Disease Causation
Chapter 17 Using Epidemiology to Evaluate Health Services
Chapter 18 Epidemiologic Approach to Evaluating Screening Programs
Chapter 19 Epidemiology and Public Policy
Chapter 20 Ethical and Professional Issues in Epidemiology
,Chapter 01: Introduction
Celentano: Gordis Epidemiology, 7th Edition Test Bank
MULTIPLE CHOICE
1. Which of the following is an example of tertiary prevention?
a. Vaccination for rotavirus for children younger than the age of 1 year
b. Surgical amputation of an extremity with osteosarcoma (bone cancer)
c. Screening for gestational diabetes after 24 weeks of pregnancy
d. Sexual education program in elementary schools
e. Increasing taxes for buying
cigarettesANSWER: B
Surgical amputation of an extremity with osteosarcoma (bone cancer) is an example in
which when a disease is present the treatment (amputation) is done to reduce the impact
of diseaseby preventing the tumor from dissemination. Vaccination for rotavirus for children
younger than the age of 1 year, sexual education program in elementary schools, and
increasing taxes for buying cigarettes represent examples of primary prevention. Screening
for gestational diabetes after 24 weeks of pregnancy is an example of secondary prevention.
2. This historic character observed that childbed fever mortality more common among women
treated by physicians and medical students compared with women treated by midwives.
Based on his observations, he implemented a hand wash policy that resulted in adecrease in
mortality.Name the character that we are talking about.
a. John Snow
b. Edward Jenner
c. D.A. Henderson
d. Leon Gordis
e. Ignaz Semmelweis
ANSWER: E
Ignaz Semmelweis identified that medical students and physicians transmitted the disease
bynot washing their hands after examining bodies at autopsies and conducting multiple
examinations in the clinic.
3. Thanks to the contributions of Edward Jenner, the following disease was eradicated
laterby efforts organized by D.A. Henderson:
a. Cholera
b. Smallpox
c. Chickenpox
d. Polio
e. Zika
,ANSWER: B
Smallpox was eradicated in 1980. Edward Jenner vaccinated James Phipps in 1796
against smallpox. Almost 200 years later, the World Health Organization (WHO)
commissioned
D.A. Henderson to lead the efforts to eradicate the disease.
4. Over the past century, a marked decline in the mortality rates of many infectious
diseases has been observed. Which of the following is the most likely reason for the
observed declinein mortality rates from common infectious diseases?
a. Development of penicillin
b. Development of insulin
c. Development of vaccines
d. Improvement in social conditions
e. Worse sanitation and unsafe
waterANSWER: D
Although medical treatments potentially helped in the decrease of infectious diseases,
the advancement in social conditions played a major role. These improvements include
better sanitation, safe disposal of waste, better nutrition, and improvement in housing
conditions.
.
,Chapter 02: The Dynamics of Disease Transmission
Celentano: Gordis Epidemiology, 7th Edition
MULTIPLE CHOICE
1. Which term most accurately describes the following definition? “The occurrence in a
community or region of cases of an illness, specific health-related behavior, or other
health-related events clearly in excess of normal expectancy.” [Porta M, ed. A Dictionary
of
Epidemiology. New York: Oxford University Press; 2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attack rate
e. Incubation
periodANSWER: B
An epidemic is the occurrence of health-related events in a community or region, in clear
excess of normal expectation. Endemic is not true because it is defined as the constant
occurrence of a disease, disorder, or noxious infectious agent in a geographic area or
population group. Pandemic is not true because it is defined as an epidemic occurring over
avery wide area, crossing international boundaries, and usually affecting a large number of
people. Attack rate is not true because it is defined as number of people at risk in whom a
certain illness develops over total number of people at risk. Incubation period is not true
because it is the interval from receipt of infection to the time of onset of clinical illness (the
onset of recognizable symptoms).
2. What is the most accurate definition of the incubation period (of an infectious disease)?
a. The time of onset of clinical illness or the onset of recognizable symptoms
b. The interval from receipt of infection to the time of onset of clinical illness (the onset
ofrecognizable symptoms)
c. The time of invasion by an infectious agent
d. The time between initiation of infection and first shedding or excretion of the agent
e. The period between exposure and the onset of
infectiousnessANSWER: B
The incubation period is defined as the interval from receipt of infection to the time of
onset of clinical illness (the onset of recognizable symptoms); in other words, the time
between themoment of developing symptoms and the moment of invasion by an infectious
agent. “The time of onset of clinical illness or the onset of recognizable symptoms” is not
true as it corresponds to “time of onset.” “The time of invasion by an infectious agent” is
not true as itcorresponds to “time of infection.” “The time between initiation of infection
and first shedding or excretion of the agent” and “The period between exposure and the
onset of infectiousness” are not true as they correspond to the latent period. (The latent
period is
, focusing on the onset of infectiousness, but the incubation period is focusing on the onset of the
symptom.)
3. There was a food poisoning outbreak on April 1, 2018, at the City Z Food Safety Conference.
There were 1,000 people registered for the conference with luncheon, 100 volunteers to host
attendees, and 50 people who served the luncheon during the conference. Except for 50 people
who served the food, all of the participants and volunteers ate the food from the luncheon at the
conference on April 1, 2018. Based only on the information given in this question, how many people
are at risk in this food poisoning outbreak?
a. 1,000
b. 1,100
c. 1,150
d. 150
e. 50
ANSWER:
B
People at risk in this outbreak are people who were exposed to the food at the conference. Even
though 1,150 people were at the conference, 50 people who served the food did not eat the food.
Therefore we have to exclude those 50 people.
4. There was a food poisoning outbreak on April 1, 2018, at the City Z Food Safety Conference.
There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food from
the luncheon at the conference on April 1, 2018. After an initial outbreak of food poisoning is
reported, an epidemiologist sends surveys to all people at risk to investigate the
cause. However, only 900 people among those at risk answer the survey. After analysis of 900
survey results, the epidemiologist concludes that the most suspected foods in the outbreak are
pepperoni pizza and meatball spaghetti. What is the overall attack rate for thosewho ate meatball
spaghetti? Use the following table to answer the question.
Summary of Survey Responses
Number of people who Number of people who ate the
developed the case definition food
symptoms
Pepperoni pizza only 113 275
Meatball spaghetti only 62 375
Both pepperoni pizza and 57 150
meatball spaghetti
Neither of pepperoni pizza or 10 100
meatball spaghetti
a. 41%
b. 38%
c. 27%
7th Edition By David D Celentano; Moyses Szklo
Chapters 1 - 20 Complete
,TABLE OF CONTENTS
Chapter 1 Introduction
Chapter 2 The Dynamics of Disease Transmission
Chapter 3 The Occurrence of Disease
Chapter 4 The Occurrence of Disease
Chapter 5 Assessing the Validity and Reliability of Diagnostic and Screening Tests
Chapter 6 The Natural History of Disease
Chapter 7 Observational Studies
Chapter 8 Cohort Studies
Chapter 9 Comparing Cohort and Case-Control Studies
Chapter 10 Assessing Preventive and Therapeutic Measures
Chapter 11 Randomized Trials
Chapter 12 Estimating Risk
Chapter 13 More on Risk
Chapter 14 From Association to Causation
Chapter 15 More on Causal Inference
Chapter 16 Identifying the Roles of Genetic and Environmental Factors in Disease Causation
Chapter 17 Using Epidemiology to Evaluate Health Services
Chapter 18 Epidemiologic Approach to Evaluating Screening Programs
Chapter 19 Epidemiology and Public Policy
Chapter 20 Ethical and Professional Issues in Epidemiology
,Chapter 01: Introduction
Celentano: Gordis Epidemiology, 7th Edition Test Bank
MULTIPLE CHOICE
1. Which of the following is an example of tertiary prevention?
a. Vaccination for rotavirus for children younger than the age of 1 year
b. Surgical amputation of an extremity with osteosarcoma (bone cancer)
c. Screening for gestational diabetes after 24 weeks of pregnancy
d. Sexual education program in elementary schools
e. Increasing taxes for buying
cigarettesANSWER: B
Surgical amputation of an extremity with osteosarcoma (bone cancer) is an example in
which when a disease is present the treatment (amputation) is done to reduce the impact
of diseaseby preventing the tumor from dissemination. Vaccination for rotavirus for children
younger than the age of 1 year, sexual education program in elementary schools, and
increasing taxes for buying cigarettes represent examples of primary prevention. Screening
for gestational diabetes after 24 weeks of pregnancy is an example of secondary prevention.
2. This historic character observed that childbed fever mortality more common among women
treated by physicians and medical students compared with women treated by midwives.
Based on his observations, he implemented a hand wash policy that resulted in adecrease in
mortality.Name the character that we are talking about.
a. John Snow
b. Edward Jenner
c. D.A. Henderson
d. Leon Gordis
e. Ignaz Semmelweis
ANSWER: E
Ignaz Semmelweis identified that medical students and physicians transmitted the disease
bynot washing their hands after examining bodies at autopsies and conducting multiple
examinations in the clinic.
3. Thanks to the contributions of Edward Jenner, the following disease was eradicated
laterby efforts organized by D.A. Henderson:
a. Cholera
b. Smallpox
c. Chickenpox
d. Polio
e. Zika
,ANSWER: B
Smallpox was eradicated in 1980. Edward Jenner vaccinated James Phipps in 1796
against smallpox. Almost 200 years later, the World Health Organization (WHO)
commissioned
D.A. Henderson to lead the efforts to eradicate the disease.
4. Over the past century, a marked decline in the mortality rates of many infectious
diseases has been observed. Which of the following is the most likely reason for the
observed declinein mortality rates from common infectious diseases?
a. Development of penicillin
b. Development of insulin
c. Development of vaccines
d. Improvement in social conditions
e. Worse sanitation and unsafe
waterANSWER: D
Although medical treatments potentially helped in the decrease of infectious diseases,
the advancement in social conditions played a major role. These improvements include
better sanitation, safe disposal of waste, better nutrition, and improvement in housing
conditions.
.
,Chapter 02: The Dynamics of Disease Transmission
Celentano: Gordis Epidemiology, 7th Edition
MULTIPLE CHOICE
1. Which term most accurately describes the following definition? “The occurrence in a
community or region of cases of an illness, specific health-related behavior, or other
health-related events clearly in excess of normal expectancy.” [Porta M, ed. A Dictionary
of
Epidemiology. New York: Oxford University Press; 2014.]
a. Endemic
b. Epidemic
c. Pandemic
d. Attack rate
e. Incubation
periodANSWER: B
An epidemic is the occurrence of health-related events in a community or region, in clear
excess of normal expectation. Endemic is not true because it is defined as the constant
occurrence of a disease, disorder, or noxious infectious agent in a geographic area or
population group. Pandemic is not true because it is defined as an epidemic occurring over
avery wide area, crossing international boundaries, and usually affecting a large number of
people. Attack rate is not true because it is defined as number of people at risk in whom a
certain illness develops over total number of people at risk. Incubation period is not true
because it is the interval from receipt of infection to the time of onset of clinical illness (the
onset of recognizable symptoms).
2. What is the most accurate definition of the incubation period (of an infectious disease)?
a. The time of onset of clinical illness or the onset of recognizable symptoms
b. The interval from receipt of infection to the time of onset of clinical illness (the onset
ofrecognizable symptoms)
c. The time of invasion by an infectious agent
d. The time between initiation of infection and first shedding or excretion of the agent
e. The period between exposure and the onset of
infectiousnessANSWER: B
The incubation period is defined as the interval from receipt of infection to the time of
onset of clinical illness (the onset of recognizable symptoms); in other words, the time
between themoment of developing symptoms and the moment of invasion by an infectious
agent. “The time of onset of clinical illness or the onset of recognizable symptoms” is not
true as it corresponds to “time of onset.” “The time of invasion by an infectious agent” is
not true as itcorresponds to “time of infection.” “The time between initiation of infection
and first shedding or excretion of the agent” and “The period between exposure and the
onset of infectiousness” are not true as they correspond to the latent period. (The latent
period is
, focusing on the onset of infectiousness, but the incubation period is focusing on the onset of the
symptom.)
3. There was a food poisoning outbreak on April 1, 2018, at the City Z Food Safety Conference.
There were 1,000 people registered for the conference with luncheon, 100 volunteers to host
attendees, and 50 people who served the luncheon during the conference. Except for 50 people
who served the food, all of the participants and volunteers ate the food from the luncheon at the
conference on April 1, 2018. Based only on the information given in this question, how many people
are at risk in this food poisoning outbreak?
a. 1,000
b. 1,100
c. 1,150
d. 150
e. 50
ANSWER:
B
People at risk in this outbreak are people who were exposed to the food at the conference. Even
though 1,150 people were at the conference, 50 people who served the food did not eat the food.
Therefore we have to exclude those 50 people.
4. There was a food poisoning outbreak on April 1, 2018, at the City Z Food Safety Conference.
There were 1,000 people registered for the conference with luncheon, 100
volunteers to host attendees, and 50 people who served the luncheon during the conference.
Except for 50 people who served the food, all of the participants and volunteers ate the food from
the luncheon at the conference on April 1, 2018. After an initial outbreak of food poisoning is
reported, an epidemiologist sends surveys to all people at risk to investigate the
cause. However, only 900 people among those at risk answer the survey. After analysis of 900
survey results, the epidemiologist concludes that the most suspected foods in the outbreak are
pepperoni pizza and meatball spaghetti. What is the overall attack rate for thosewho ate meatball
spaghetti? Use the following table to answer the question.
Summary of Survey Responses
Number of people who Number of people who ate the
developed the case definition food
symptoms
Pepperoni pizza only 113 275
Meatball spaghetti only 62 375
Both pepperoni pizza and 57 150
meatball spaghetti
Neither of pepperoni pizza or 10 100
meatball spaghetti
a. 41%
b. 38%
c. 27%
