What would be an example of an exposure ratio threshold?
What would be an example of an exposure ratio threshold?
Amari Flowers
2020-11-22
Answered
You can still ask an expert for help
Expert Answer
toroztatG
Answered 2020-11-23
Author has 98 answers
Step 1
Exposure ratio is relevant in a case control study. It involves the following concepts:
1)case group - group of subjects under active study who are exposed to a risk factor.
2)control group - group of subjects which is used as a reference to compare the results of risk on the case group.
3)risk factor - manifestation of a risk (e.g., a disease) in subjects of control group or case group.
Exposure ratio is defined as the ratio of:
the rate at which persons in the case group are exposed to a risk factor to
the rate at which persons in the control group are exposed to the risk factor under study.
Exposure ratio threshold can be defined as the value of exposure ratio above which we can conclude that the risk factor is significant contributor to the effect witnessed in the case group vis a vis the control group.
Step 2
Considering an example:
Case group consists of 30 healthy people having blood group 0
Control group consis of 30 healthy people having a mix of all other blood groups.
Both groups are exposed to polluted air with high particulate matter for two hours everyday for 30 days.
At the end of the experiment , number of people from both groups suffering from respiratory diseases are identified.
Exposure ratio in this case will be ratio of number of sick people in case group to the number of sick people in the control group.
If this value is greater than a specified threshold (exposure ratio threshold) then we can conclude that people with blood group O are more vulnerable to diseases caused by polluted air.
Exposure ratio
Step 3
Answer:
A sample scenario is presented for application of exposure ratio and the threshold value.
Exposure ratio is relevant in a case control study. It involves the following concepts:
1)case group - group of subjects under active study who are exposed to a risk factor.
2)control group - group of subjects which is used as a reference to compare the results of risk on the case group.
3)risk factor - manifestation of a risk (e.g., a disease) in subjects of control group or case group.
Exposure ratio is defined as the ratio of:
the rate at which persons in the case group are exposed to a risk factor to
the rate at which persons in the control group are exposed to the risk factor under study.
Exposure ratio threshold can be defined as the value of exposure ratio above which we can conclude that the risk factor is significant contributor to the effect witnessed in the case group vis a vis the control group.
Step 2
Considering an example:
Case group consists of 30 healthy people having blood group 0
Control group consis of 30 healthy people having a mix of all other blood groups.
Both groups are exposed to polluted air with high particulate matter for two hours everyday for 30 days.
At the end of the experiment , number of people from both groups suffering from respiratory diseases are identified.
Exposure ratio in this case will be ratio of number of sick people in case group to the number of sick people in the control group.
If this value is greater than a specified threshold (exposure ratio threshold) then we can conclude that people with blood group O are more vulnerable to diseases caused by polluted air.
Exposure ratio
Step 3
Answer:
A sample scenario is presented for application of exposure ratio and the threshold value.
Not exactly what you’re looking for?
This is helpful
Relevant Questions
asked 2020-11-01
Solve the following problems applying Polya’s Four-Step Problem-Solving strategy.
If six people greet each other at a meeting by shaking hands with one another, how many handshakes take place?
If six people greet each other at a meeting by shaking hands with one another, how many handshakes take place?
asked 2021-03-02
In how many ways can 7 graduate students be assigned to 1 triple and 2 double hotel rooms during a conference
asked 2020-10-23
Researchers wanted to compare the effectiveness of a water softener used with a filtering
process with a water softener used without filtering. Ninety locations were randomly divided into two groups of equal size. Group A locations used a water softener and the filtering process, while group B used only the water softener.
At the end of three months, a water sample was tested at each location for its level of softness.
(Water softness was measured on a scale of 1 to 5, with 5 being the softest water.)
The results were as follows:
Group A (water softener and filtering)
asked 2021-10-17
Test whether the claim that the two sample groups come from populations with the same mean or not.
asked 2020-11-11
Parameters and Statistics: Prove that is of Describe the population and the sample, respectively. Give a full and correct your answer for this question
asked 2020-12-24
Explain how its
asked 2020-12-25
True // False: comparing means. Determine if the following statements are true or false, and explain your reasoning for statements you identify as false.
(a) When comparing means of two samples where
and
we can use the normal model for the difference in means since
(b) As the degrees of freedom increases, the t-distribution approaches normality.
(c) We use a pooled standard error for calculating the standard error of the difference between means when sample sizes of groups are equal to each other.
(a) When comparing means of two samples where
and
we can use the normal model for the difference in means since
(b) As the degrees of freedom increases, the t-distribution approaches normality.
(c) We use a pooled standard error for calculating the standard error of the difference between means when sample sizes of groups are equal to each other.
