EHS 260 Lecture 16: EHS 260 - lecture 16 - 1
18 Jun 2018
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Rates
Typically the incidence and prevalence rates are less than 1
Therefore, to make the number meaningful, they are expressed as some power of 10
Per 100
Per 1,000
Per 10,000
Per 100,000
Epi Measures
Important to report rates, not just cases
•Number of injuries in a fitness facility
•50 injuries
•Need to take the denominator into account
•If the facility has 50 clients (Rate = x %)
•If the facility has 100 clients (Rate = x %)
•If the facility has 1,000 clients (Rate = x %)
•If the facility has 2,000 clients (Rate = x %)
•100%
•50%
•5%
2.5%
More rates
If the rate is calculated to be .005 (deaths/year)
.005 x 1,000 =
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Document Summary
Typically the incidence and prevalence rates are less than 1. Therefore, to make the number meaningful, they are expressed as some power of 10. Important to report rates, not just cases: number of injuries in a fitness facility. 50 injuries: need to take the denominator into account. If the facility has 50 clients (rate = x %) If the facility has 100 clients (rate = x %) If the facility has 1,000 clients (rate = x %) If the facility has 2,000 clients (rate = x %) If the rate is calculated to be . 005 (deaths/year) 5 deaths per 1,000 individuals in the population per year. If . 09 people/year are diagnosed with a disease. How many people have a particular disease or engage in a behavior at a certain time. Not helpful for determining factors that may be related to increased probability of disease. Formula for prevalence rate number of people with the health-related outcome at a specified time.
