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there is no significant association between the variables
what does it mean if an analytic study determines that the null hypothesis is acceptable?
PPV decreases as prevalence decreases
If the prevalence of a disease dramatically decreases, what will be the effect on the positive predictive value of the test for this disease?
age
what variable was identified as the most important factor when describing occurrence of disease or illness
those members of the overall population who are capable of developing the disease
What is the definition of the "population at risk" in epidemiology?
rabies
What disease is the primary regulatory focus of the State Public Health Veterinarian?
department of health
state public health veterinarian located
randomization
when designing and conducting an analytic study, what action is the primary method of minimizing bias
dogs
What animal species is most responsible for transmitting rabies to humans in the world
lower the better p<0.05
what level of statistical significance (p-value) gives the highest confidence in the result?
state department of agriculture
in what part of the state government is the state veterinarian located
pathogenicity
The ability of a particular disease agent to produce disease in another host?
understand the normal baseline incidence of disease
According to the KY State PH Veterinarian, what is the primary purpose of conducting disease surveillance programs?
very high (>99%)
You administer a rapid test for a disease with a prevalence that is fairly low (~2.1%). The test is approximately 95% sensitive and 95% specific. Given this information, what would you expect for a negative predictive value?
raccoon variant
What is the predominant rabies virus variant along the entire eastern region of the U.S?
probability
________ is the "numerical expression of the likelihood of occurrence"? (aka, what are the chances something will happen?)
descriptive epidemiology
What field of epidemiology classifies the occurrence of disease according to the variables of time, place, and person?
state department for public health
The KY State Public Health Veterinarian works within what State department?
there was a significant association between the varriables
if an active study determines that the null hypothesis is rejected, what conclusion can be drawn?
secular trend
what epidemiologic term refers to gradual changes in the frequency of disease over long periods of time
active surveillance
a disease surveillance system that is very expensive and detects nearly all cases is likely to be which type of surveillance system we discussed?
relative risk, <1
After conducting a RCT, you conclude that the exposures was negatively associated with the outcome. What is the measure of association with this scenario?
sample size
in a descriptive study, what was identified as the largest determinant of chance (aka the role of randomness) in the overall degree of error
bats
What animal species is most responsible for transmitting rabies to humans in the United States?
continued incidence of disease adds to its prevalence, which will increase over time
in a chronic, infectious disease that does not kill or get better between that diseases incidence and prevalence
infection
a food borne illness is characterized by a longer incubation time and symptoms that span the GI tract. would this most likely be an infection or an intoxication
locate and exteriorize each uterine horn
what is a snook hook used for
68%
what is the percentage represented by the red area of this bell curve (1 SD on either side of the mean)
genetic fingerprinting
in the CDC's pulse net system, what
cases are those with the disease, controls have similar characteristics but do not have the disease
how case and controls are selected for case control studies
stop the outbreak
what is the number one goal of a disease outbreak investigation
infectivity
a measure of the ability of a disease agent to establish itself in the host's the definition of
internal validity
what analytic epidemiological term/ phrase refers to the degree to which the study has used methodology sound procedures
food safety
the scientific discipline describing handling, preparation, and storage of food in ways that prevent foodborne illness is the definition of what concept
cross sectional study
what type of study looks at potential associations between exposure and outcome, takes place at a single point in time, can determine prevalence (but not incidence), is quick and easy, and can study multiple exposures and outcomes
vertical direct transmission
what type of transmission is represented by a mare transmitting a disease in utero to the developing foal
dr. John snow
who is ht father of epidemiology
they produce toxins
who do B. cereus, S. aureus, C. perfringens, and C. botulinum produce food borne illness with such short periods of incubation
monitoring
ongoing observations without taking action based on the outcome defines what type of surveillance
food defense
what is the term defined as the effort to protect food from acts of intentional adulteration
strength of association
what criteria of causality is defined by dose dependency
strong evidence that the exposure contributed to the disease
what do an odds ratio of >5 indicate in regard to exposure and disease relationship
fomite indirect transmission
what type of transmission is represented by a veterinarian carrying FMD virus on their boots between farms
confirm the existence of a disease event
what is the first step in a CDC outbreak investigation
HUS
what disease, caused by certain food borne strains of E. coli, can result in a deadly kidney disease in children
the exposure provided protection from the disease
what does an odds ratio of <1 indicate in regard to the exposure and disease relationship
intermittent outbreak
what type of transmission best describes an outbreak with this epidemic curve shape
10%
250 individuals in a susceptible population of 5,000 contract a disease. Of the 250, 25 died from the disease. what is the case fatality rate
A disease that can be transmitted from animals to humans.
define a zoonotic disease
infections
between food borne intoxications, toxic-infections, and infections, which group tends to exhibit the longest incubation period
artifactual association
The significant introduction of bias in the determination of an association between cause and effect is likely to results in what type of association?
we never completely rule out chance
when addressing disease associations and causality, how do we completely rule out chance
major general Oliver O. Howard
what notable figure founded Lincoln memorial university