Assignments PHM2612
Module 3.1 Descriptive Comparisons
Corrected Answers
Complete this quiz on Canvas by or before the due date listed on the class calendar. Please
note that you will only have one attempt to complete the quiz; however, there is no time limit.
Read each question carefully and answer to the best of your knowledge. For questions
requiring calculations, keep 5 decimal places for intermediate steps (e.g. XX.XXXXX) and
round your final answers to two decimal places (e.g. XXX.XX), unless instructed otherwise.
You may use this document to answer the questions prior to submitting your responses on
Canvas under the QUIZZES tab. (23 points)
NOTE: there are two parts to this assignment. You will need to use the DSHS site to complete
the answers in part 2.
Part 1
1. If the observed number of deaths and the expected number of deaths are not the same,
then the standardized mortality ratio (SMR) would be different from 1 and this would
indicate that the observed mortality is not unusual. (2 points)
a. True
b. False
2. When directly comparing rates in different studies or across populations with potentially
different population structures, it is best to use adjusted rates. (2 points)
a. True
b. False
True. After adjustment, the rates in different studies or areas can be compared
directly.
3. Proportional Mortality Ratio (PMR) is the number of deaths from a particular disease
over a specific time period divided by the number deaths from all causes that occurred
over the same time period. (2 points)
a. True
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, 2
b. False
4. The denominator for cause-specific death rates is the total number of deaths at the
midpoint of that time period, while the numerator is the number of deaths from a
specific cause during the specified time period. (2 points)
a. True
b. False
5. The direct adjustment method is preferred over indirect adjustment when stratum-
specific rates in your population of interest are known. (2 points)
a. True
b. False
6. An advantage for calculating crude rates versus adjusted rates is that we do not need to
consider multiple factors (e.g., age, sex, education, etc.) at once. (2 points)
a. True
b. False
7. Which of the following statements best describes the public health implications of crude
and adjusted rates? (2 points)
a) Adjusted rates are the true rates of disease or death for a population based on
surveillance of a population while crude rates are used primarily to compare
occurrence of disease or death across different populations or areas
b) Crude rates are the true rates of disease or death for a population based on
surveillance of a population while adjusted rates are used primarily to compare
occurrence of disease or death across different populations or areas
8. Match the descriptions or required elements needed to perform the two types of
standardization (indirect, direct, or both) below. (2 points)
_C_Requires a reference or standard population A = Direct
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