Biostatistics & Epidemiology Questions
Which of the following is not a reservoir of an infectious agent?
A symptomatic human
What is the meaning if validity in research?
All of them (Accuracy, Reliability & Consistency)
Disease control measures can be directed at?
All of them (Agent, Source & Mode of transmission)
Disease control measures can be directed at:
All of them (agent, source, mode of transmission)
Which of the following is a source of data of the study?
All the above (Individual persons, Environment & Health care providers)
The key feature of an analytic epidemiological study is:
Analysis by time, place, and person
Investigating a hypothesis about the cause of disease in a study is refers to?
Analytic epidemiology
The most appropriate measure of association for these data is the:
Attributable risk percent
Which graph can you use to display the number of cases of dog bites by each group
Bar Chart
Which graph is used for categorical variables on the x-axis?
Bar Chart
10 cases of cancer diagnosed over two years among residents of a single neighborhood previous data, not available.
Cluster
Subjects are categorized on the basis of their exposure to one or more risk factors is called?
Cohort study
Which of the following variables describes the appropriate measurement scale or type Birthweight in grams?
Continuous
When analyzing surveillance data by age, which of the following age groups is preferred? (Choose one best answer)
Depends on the disease
Which epidemiology study examining the distribution of disease in a population, and observing the basic features of its distribution?
Descriptive
Which epidemiology study, examining the distribution of disease in a population, and observing the basic features of its distribution.
Descriptive
Which of the following are two types of observational epidemiology?
Descriptive & analytical
Name the two types of statistics?
Descriptive and Inferential Statistics
What is a logical sequence used to practice epidemiology in disease prevention:
Descriptive.......... Analytical........Interventions..........Programs
Public health surveillance includes which of the following activities:
Diagnosing of cases
Variables that are associated with counting are called?
Discrete
Which come first? when the Outbreak with KNOWN causative agent, source, and mode of transmission:
Disease control and prevention efforts take priority over investigation efforts
200 cases of the century infection in several districts in chinoyi in province, over several months than predicted.
Epidemic
Comparing numbers and rates of illness in a community why rates are preferred?
Estimating subgroups at highest risk
What is Descriptive epidemiology?
Examining the distribution of disease in a population, and observing the basic features of its distribution.
A study in which children are randomly assigned to receive either a newly formulated vaccine or the currently available vaccine, and are followed to monitor for side effects and effectiveness of each vaccine, is an example of which type of study?
Experimental
Descriptive epidemiology is essential for characterizing the outbreak by time, place, and person, but has little bearing on the analytic epidemiology.
False
On the reporting, it's not a problem for detecting outbreaks of notifiable diseases, because the proportion of cases reports that tends to remain furtively stable overtime.
False
Once a case definition for an outbreak investigation has been established, it should not be changed
False
Which graph displays continuous data
Histogram
Which of the following graph is an example of displaying an epidemic curve?
Histogram
Which of the following craft uses columns that can be subdivided with colour or shading to show sub groups?
Histograms
The proportion of a specific disease-free population developing a particular disease in a specific study period is known as?
Incidence
A variable that is associated with problem as well as with a possible cause of the problem is
Independent variable
Which come first? When the Outbreak with KNOWN causative agent, but UNKNOWN source and mode of transmission?
Investigation efforts take priority over disease control and prevention efforts
Which come first? When the Outbreak with UNKNOWN causative agent, source, and mode of transmission Investigating an Outbreak.
Investigation efforts take priority over disease control and prevention efforts
John Snow's investigation of cholera is considered a model for epidemiologic field investigations, which statement is false?
Multivariate statistical model
Zambian investigators conducted a study to compare measles-mumps-rubella (MIMR) vaccine history among 2,941 children with pervasive development disorder and 4,469 children without such disorders. (They found no association.) This is an example of which study type?
Observational
In the Nkosipile Women Health Study project, the researchers enrolled 41,837 women in 2019 and collected exposure and lifestyle information to assess the relationship between the factors and subsequent occurrence of Breast cancer, what is this study types?
Observational and Case-control
Which of the following is an example of a continuous variable?
Weight
Targeted population means:
What to include
In the definition of epidemiology, "distribution" refers to:
Where
Which statement best define a specific case?
Will exclude most non-cases, but will also exclude some actual cases.
A case definition during an outbreak investigation, should specify:
all of them (time, place, person & clinical features)
Which of the following does not affect sample size?
Time
Descriptive epidemiology identify patterns among cases and in populations by?
Time place, person
Which of the following statement is not the use of epidemiology?
To generate hypothesis
The hallmark feature of an analytic epidemiologic study is?
Use of an appropriate comparison group
In a malaria-free population of 1000 there are 4 new cases of malaria within one year, What is the incidence?
0.004
Which of the following is an example of analytical study?
Case Control
Which of the following is the an example of analytical study?
Case control
Which study design compares the subject with the disease and those without the same disease:
Case control study
Which study design compares the subjects with disease and those without the same disease?
Case control study
What are the two forms of classifying the Variables?
Categorical and numerical
In the definition of epidemiology, determinants refer to:
Causes
Birthweight classified as low, medium, high is an example of which measure of scale?
Ordinal
40 cases of salmonella enteritis in one-week trees to single meal served at the cafeteria, usually never recovered.
Outbreak
A disease or condition that spreads across region is referred to:
Pandemic
A disease or condition that spreads across regions is refers to:
Pandemic
Name the graph used to display the number of cases of dog bites by breed of the dog
Pie chart
Which term refers to a group of individuals that share a common thread
Population
What do call the proportion of all people with positive tests who have the disease?
Predictive value
Which activities is not included in Epidemiology?
Prescribing an antibiotic to treat a patient with community acquired infection
What do we call the proportion of a specific population having a particular disease.
Prevalance
Which term best defined as a number of cases occurring during a specific period?
Rate
A subset of the population is refers to?
Sample
What do we call the process to detect among healthy people disorders or risk factors of which they are unaware.
Screen
Which of the following can be used to detect surveillance of 23 of 30 actual cases of a disease.
Sensitivity
Which of the following is the categorical variable?
Sex
A cohort study differs from a case-control study in that:
Subjects are enrolled or categorized on the basis of their exposure status in a cohort study but not in a case-control study
Which statement defines Case Control study design?
Subjects identified as having a disease or condition are compared with subjects without the same disease or condition