Exam (elaborations)
HLTH 501 Biostatistics - Final Review Questions And Answers 2024/2025 Update
- Course
- HLTH 501
- Institution
- California State University - Chico
HLTH 501 Biostatistics - Final Review Questions And Answers 2024/2025 Update
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HLTH 501 Biostatistics - FinalReview Questions And Answers
2024/2025 Update
Which of the following types of graphics would be most useful in demonstrating the frequency of a
given outcome as it relates to an ordinal variable? Answer: histogram
57694122
According to the data, which measure, is a better measure of dispersion? Answer: standard
deviation
Misclassification bias often occurs in case-control studies. Answer: True
The incidence rate of X disease in patients receiving the new medication is calculated by: Answer:
patients who are receiving the new medication and have X disease / total follow-up (years) of the
patients who are receiving the new medication ( times (x) 1000 to make a whole number if necessary)
(a/b if set up in correct way)
A design that is a very detailed report of the specific features of a particular participant or case is known
as? Answer: case report
The Cumulative incidence is computed as the number of persons who develop a disease during a
specified period over the number of persons examined at baseline Answer: false
1,000 people are enrolled in a 10-year cohort study. At the start of the study, 100 have diagnosed CVD.
Over the course of the study, 80 people who were free of CVD at baseline develop CVD. What is the
cumulative incidence at 10 years? Answer: 0.089 = 80/900: the number of new events or cases of
disease divided by the total number of individuals in the population at risk for a specific time interval.
, Biostatistics is integral to the field of epidemiology, which is defined as study of health and illness in
human populations, patterns of health or disease, and the factors that influence these patterns.
Answer: True
The best numerical summaries for dichotomous, ordinal, and categorical variables are relative
frequencies. Answer: true
Incidence of disease is the proportion of individuals with the condition (disease) at a single point in time
Answer: false
The following data were collected as part of a study of coffee consumption among graduate students.
The following reflect cups per day consumed: 3, 4, 6, 8 ,2, 1, 0, and 2. The standard deviation is
approximately 4. Answer: false: use excel to find stdev().
Assume a new measure of Intelligence Quotient (or IQ) has been developed. The mean IQ for the
population is 100 and the standard deviation is 15. The standard deviation indicates the average
distance an individual data value is from the mean is about 15 IQ points. Answer: true
A nested case-control study is a specific type of case-control study that is usually designed from a cohort
study. Answer: true
An investigator reviewed the medical records of 200 children seen for care at Boston Medical Center in
the past year who were between the ages 8 and 12 and identified 40 children with asthma. He also
identified 40 children of the same ages who were free of asthma. Each child and their family were
interviewed to assess whether there might be an association between certain environmental factors
such as exposure to second-hand smoke. This study is an example of a: Answer: case control study
The term clinical means that the study involves people. Answer: true
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