CERTIFIED IN PUBLIC HEALTH - CPH
EXAM NEWEST ACTUAL EXAM 2024-
2025 QUESTIONS AND DETAILED
CORRECT ANSWERS | ALREADY
PASSED
National Physical Activity Guidelines for Americans
suggest adults need to participate in at least 150 minutes
per week in moderate intensity physical activity for
substantial health benefits. A study was designed to test
whether there is the difference in mean time (in minutes)
spent in moderate intensity physical activity in adults with
no, mild, moderate and severe depression. Time spent in
moderate intensity physical activity is a continuous
measure which can be assessed using an accelerometer.
Which among the following is the most appropriate
statistical technique to test the difference in time spent in
moderate intensity physical activity between adults with
no, mild, moderate and severe depression?
1.Spearman correlation
2.ANOVA
3.t-test
4.chi-square test Correct Answer ANOVA
A case-control study comparing ovarian cancer cases with
community controls found an odds ratio of 2.0 in relation to
exposure to radiation. Which is the correct interpretation of
the measure of association?
,1.Women exposed to radiation had 2.0 times the risk of
ovarian cancer when compared to women not exposed to
radiation
2.Women exposed to radiation had 2.0 times the risk of
ovarian cancer when compared to women without ovarian
cancer
3.Ovarian cancer cases had 2.0 times the odds of
exposure to radiation when compared to controls
4.Ovarian cancer cases had 2.0 times the odds of
exposure to radiation when compared to controls with
other cancers Correct Answer Ovarian cancer cases had
2.0 times the odds of exposure to radiation when
compared to controls
Select the correct statement concerning relative risk.
1.A relative risk of 10 has the same strength of association
as a relative risk of 0.1.
2.It is possible to calculate a relative risk when data are
from a case-control study.
3.At least one variable should be normally distributed to
calculate a relative risk.
4.Coefficients from logistic regression analysis yield
relative risk. Correct Answer A relative risk of 10 has the
same strength of association as a relative risk of 0.1.
A doctor would like to estimate a patients' weight based on
their age and sex. Age and sex are known as?
1.Response variables
2.Dependent variables
3.Outcome variables
A study investigates the relationship of age to body mass
index (BMI). A sample of individuals is selected, and age
and BMI are measured. As part of the preliminary
analysis, a simple linear regression of BMI on age is
performed using a statistical software package. The
resulting estimate of ß (beta) from the analysis output
describes which of the following? Correct Answer slope of
the regression line
Which of the following best describes the tendency for an
insured person to overuse health services because he has
insurance? Correct Answer moral hazard
Assume that the true odds ratio between an exposure and
a disease is 2.7. Which of the following results in an
observed odds ratio that is weaker than the true odds
ratio? Correct Answer poor-quality exposure information
that introduces random error into the exposure
classification
Which of the following organizations accredits local public
health departments? Correct Answer Public Health
Accreditation Board
Which of the following infectious diseases results from
inadequately treated drinking water? Correct Answer
dysentery
, A researcher is calculating the infant mortality rate of
several states. Which of the following methods is most
appropriate to use during this analysis to adjust for racial
differences in infant mortality rates among the states?
Correct Answer direct standardization
In addition to ozone and particulates, which of the
following pollutants is most likely to aggravate asthma?
Correct Answer sulfur dioxide
A county public health department has prepared the
annual operating budget for its childhood vaccination
program. It forecasts that 90,000 children will be
vaccinated, requiring a total of 48,000 hours of nursing
labor at an average cost of $25 per hour and 100,000
doses of vaccination at an average cost of $1.50 per dose.
Fixed costs of the vaccination program, such as
administration and overhead, are estimated at $50,000.
Which of the following calculations is most appropriate to
obtain the forecastA county public health department has
prepared the annual operating budget for its childhood
vaccination program. It forecasts that 90,000 children will
be vaccinated, requiring a total of 48,000 hours of nursing
labor at an average cost of $25 per hour and 100,000
doses of vaccination at an average cost of $1.50 per dose.
Fixed costs of the vaccination program, such as
administration and overhead, are estimated at $50,0
Correct Answer (100,000 x $1.50) / 90,000
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