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CHYS 3P60 Lecture : Autism

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carminecamel732
22 Dec 2011
School
Brock University
Department
Child and Youth Studies
Course
CHYS 3P60
Professor
Tricia Vause

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Document Summary

What is prevalence: proportion of people in society with whom have a particular challenge. Why is it so important to study the epidemiology of asd: provide better funding, how the prevalence changes over time, for research: in order to improve asd, genetic counselling. Definition: the extent to which a test provides constant and error free measurements: what could happen if we don t have a measure that is reliable: false negative: have autism, yet results say they don t. false positive: do not have autism, yet the results say they do. Prevalence: the proportion of individuals in a population who suffer from a defined disorder. Incidence: the number of new cases occurring in a population over a period of time. Examining the scientific evidence: mmr vaccine and autism. Some facts about measles: according to who. In 1999 developing countries that were approximately 900 000 deaths associated with measles.

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Related Questions

how tuberculosis and hiv coexist, provide statistics for the prevalence of TB and HIV overall. Also, include the prevalence among groups that are disproportionately affected by TB and HIV. The epidemiologic profilefas well. In addition you need to provide an overview for the health behavior theories that are typically applied among interventions for these health issues.

identify and discuss thoroughy a suitable epidemiological studydesign to study the prevalence of measles in a largepopulation.

do you agree or disagree and why? + source of the information:

A prevalence proportion differs from an incidence rate by specified cases and time period. A prevalence rate focuses on all kinds of existing cases while incidence rate focuses on new cases of disease. Incidence rate is calculated by dividing the number of new cases over a certain period of time by the population number that is at risk at that same time. The prevalence proportion can be calculated by the number of all existing illness and deaths at a specific time divided by the number of people in that population. There is also point prevalence, which the prevalence is measured at a certain point and period prevalence which measures prevalence over a period of time. To estimate the future risk of breast cancer among women aged 50-65, Incidence rate would be a better indicator since it focuses on the new cases and divides that number by the average population that is at risk at that certain time. It would be better at indicating the risk for women of that specific age group. When estimating the number of surgeons to treat breast cancer a prevalence proportion would be a better indicator. Because a prevalence proportion focuses on all cases and not just new cases, it can measure the ratio of how many surgeons will be needed to treat all people vs just new cases.