Practice questions CPH exam UPDATED
Exam Questions and CORRECT
Answers
Public health laws approved by city or county boards must be - CORRECT ANSWER -
approved by referendum
Sensitivity - CORRECT ANSWER - true positive rate; proportion of positives correctly
identified as such; A/A+C
Specificity - CORRECT ANSWER - true negative rate; probability of testing negative if
the disease is truly absent; D/B+D
A confounding variable - CORRECT ANSWER - is associated with exposure; it can
strengthen or weaken
Rate data such as the number of events occurring in a specified period of time are often
described by which probability distribution? - CORRECT ANSWER - The Poisson
distribution is often used to describe count data and can be used to describe rate data by
including an offset term for the denominator of the rate.
The number of independent events needed for selecting the appropriate probability model is
specified by the: - CORRECT ANSWER - Probability distributions are based on the
number of independent events. Degrees of freedom (to vary) are used as the specification of the
number of events that can vary. If we are predicting a parameter (which is a fixed value), only
the number of events minus 1 can vary and the final event would then have to be a specific value,
it cannot vary and is thus not an independent event.
Enteric pathogens - CORRECT ANSWER - bacteria of the intestines
, traditional indicator of microbiological water quality - CORRECT ANSWER - fecal
coliform bacteria
Health Impact Assessment - CORRECT ANSWER - a combination of procedures,
methods, and tools by which a policy, program or project may be judged as to its potential effects
on the health of a population, and the distribution of those effected within the population
Case fatality - CORRECT ANSWER - proportion of deaths within a designated population
of "cases"; # of deaths/ #of diagnosed within time period
Risk communication - CORRECT ANSWER - building and maintaining trust between
spokespeople and audience is a cornerstone of effective risk communication; two-awy process
with active participants on both sides
Pearson correlation coefficien - CORRECT ANSWER - The Pearson's correlation
coefficient is a measure of association that indicates the degrees to which two variables have a
lineal relationship. The coefficient, r, can vary between -1 and +1. When r = +1, there is a perfect
positive linear relationship in which one variable varies directly with the other. When r = -1,
there is a perfect negative linear relationship between the variables. The measure can be
generalized to quantify the degree of linear relationship between one variable to another. By
definition, a Pearson correlation coefficient value is always between -1 and 1.
Public health emergency preparedness - CORRECT ANSWER - training key decision
makers and first responders for coordinate actions; identifying surge capacity in the
infrastructure; develop channels for real-time interagency communication
precautionary principle - CORRECT ANSWER - philosophy or approach advocating the
prevention and/or control of potential environmental hazards before there is scientific proof or
consensus about the potential harm
Medical care - CORRECT ANSWER - Thought to have the smallest impact on the health
of the population; only 10% of America's population health is attributable to medical care
Exam Questions and CORRECT
Answers
Public health laws approved by city or county boards must be - CORRECT ANSWER -
approved by referendum
Sensitivity - CORRECT ANSWER - true positive rate; proportion of positives correctly
identified as such; A/A+C
Specificity - CORRECT ANSWER - true negative rate; probability of testing negative if
the disease is truly absent; D/B+D
A confounding variable - CORRECT ANSWER - is associated with exposure; it can
strengthen or weaken
Rate data such as the number of events occurring in a specified period of time are often
described by which probability distribution? - CORRECT ANSWER - The Poisson
distribution is often used to describe count data and can be used to describe rate data by
including an offset term for the denominator of the rate.
The number of independent events needed for selecting the appropriate probability model is
specified by the: - CORRECT ANSWER - Probability distributions are based on the
number of independent events. Degrees of freedom (to vary) are used as the specification of the
number of events that can vary. If we are predicting a parameter (which is a fixed value), only
the number of events minus 1 can vary and the final event would then have to be a specific value,
it cannot vary and is thus not an independent event.
Enteric pathogens - CORRECT ANSWER - bacteria of the intestines
, traditional indicator of microbiological water quality - CORRECT ANSWER - fecal
coliform bacteria
Health Impact Assessment - CORRECT ANSWER - a combination of procedures,
methods, and tools by which a policy, program or project may be judged as to its potential effects
on the health of a population, and the distribution of those effected within the population
Case fatality - CORRECT ANSWER - proportion of deaths within a designated population
of "cases"; # of deaths/ #of diagnosed within time period
Risk communication - CORRECT ANSWER - building and maintaining trust between
spokespeople and audience is a cornerstone of effective risk communication; two-awy process
with active participants on both sides
Pearson correlation coefficien - CORRECT ANSWER - The Pearson's correlation
coefficient is a measure of association that indicates the degrees to which two variables have a
lineal relationship. The coefficient, r, can vary between -1 and +1. When r = +1, there is a perfect
positive linear relationship in which one variable varies directly with the other. When r = -1,
there is a perfect negative linear relationship between the variables. The measure can be
generalized to quantify the degree of linear relationship between one variable to another. By
definition, a Pearson correlation coefficient value is always between -1 and 1.
Public health emergency preparedness - CORRECT ANSWER - training key decision
makers and first responders for coordinate actions; identifying surge capacity in the
infrastructure; develop channels for real-time interagency communication
precautionary principle - CORRECT ANSWER - philosophy or approach advocating the
prevention and/or control of potential environmental hazards before there is scientific proof or
consensus about the potential harm
Medical care - CORRECT ANSWER - Thought to have the smallest impact on the health
of the population; only 10% of America's population health is attributable to medical care
