Class Notes (906,168)
CA (538,602)
Brock U (12,397)
PSYC (856)
PSYC 3F40 (54)
Lecture

partitions risk .doc

2 Pages
102 Views

Department
Psychology
Course Code
PSYC 3F40
Professor
Caroline Starrs

This preview shows half of the first page. Sign up to view the full 2 pages of the document.
The basic model, partitions risk assessment into four steps: hazard identification,
dose-response modeling, exposure assessment and risk characterization.
Integration of a risk assessment with a cost analysis and other matters to develop
strategies for risk regulations and control often called risk management
Hazard identification uses the input of biologist, chemist and others to determine
whether available data indicate that some compound or exposure should be
considered possible hazards.
Dose-response modeling requires the input of statisticians, epidemiologist and
people expert in developing models that predict adverse response as a function of
dose.
Toxicologists are important for understanding mechanism of toxicity and the
relevance of animal data for human exposures.
Exposure measurements often require the input of engineers as well as
hydrologist (for waterborne hazards), meteorologists (for airborne hazards). And
analytical chemists.
The risks associated with exposures to a hazard may be expressed by a variety of
summary satisticans that include individual life time risk, annual population risk,
the percentage or proportion of increase in risk and loss of life expectancy.
Six essential issues arise in risk assessment. First, not every person exposed to a
potential hazard will exhibit an adverse response. In addition, almost every
adverse response to some exposure may occur even without exposure, although
the link between asbestos and mesothelimoa may be a near-exception.
Second, the frequenecy or magnititude of an adverse response geneally depends
on the degree and extent of exposure to a hazard.
Third, people vary intheir response to the same level of dose or exposure.
The risk for any individual may depend on a variety of intrinsic factors such as
age, sex, prior or concurrent exposures to other hazards, and the level of
detoxifying enzymes.
Fourth, data for the direct measurements of human risk are often absent or
seriously inadequate.
Fifth, mayn risks are deemed acceptable, and their acceptability depends on many,
sometimes suprising factors, including the number of people exposed, whether
exposure is voluntary.
Finally, criter are often unclear about the best way to balance risk and benefits to
establish acceptable exposure limits for a hazard.
Risk in Context:
Good risk management requires good risk assessment.
Two strategies are commonly used in quantative risk assessment. One is the
margin of safety approach, in which a scientific team looks for the higest dose
that has produced no effect in animal or human studies, defined as the “no
observed effect level”
Uncertainty in Risk Assessment:
The relation of risk to dose or exposure is generally uknown and often
controversial.

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
 The basic model, partitions risk assessment into four steps: hazard identification, dose-response modeling, exposure assessment and risk characterization.  Integration of a risk assessment with a cost analysis and other matters to develop strategies for risk regulations and control often called risk management  Hazard identification uses the input of biologist, chemist and others to determine whether available data indicate that some compound or exposure should be considered possible hazards.  Dose-response modeling requires the input of statisticians, epidemiologist and people expert in developing models that predict adverse response as a function of dose.  Toxicologists are important for understanding mechanism of toxicity and the relevance of animal data for human exposures.  Exposure measurements often require the input of engineers as well as hydrologist (for waterborne hazards), meteorologists (for airborne hazards). And analytical chemists.  The risks associated with exposures to a hazard may be expressed by a variety of summary satisticans that include individual life time risk, annual population risk, the percentage or proportion of increase in risk and loss of life expectancy.  Six essential issues arise in risk assessment. First, not every person exposed to a potential hazard will exhibit an adverse response. In addition, almost every adverse response to some exposure may occur
More Less
Unlock Document


Only half of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit