If Washington state has more cases of hep C reported in 2010, 105,800 than OR 79,800....

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If Washington state has more cases of hep C reported in 2010,105,800 than OR 79,800. Why is the reported prevalence rate higherin OR (3.05) than WA (2.30) per 100
assuming OR population at that time 2964621 and WA 5143186

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3.8 Ratings (517 Votes)

Case 1: Washington DC

Prevalence Rate = (Cases of Hepatitis C/Population) X 100

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = (105800/5143186) X 100 = 2.06 (given as 2.30)

Case 2: OR

Prevalence Rate = (Cases of Hepatitis C/Population) X 100

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â = (79800/2964621) X100 = 2.69 (given as 3.05)

Even though Washington State has more cases of Hepatitis C (105800) compared to OR (79800), the reported prevalence rate in OR in higher (3.05) than Washington (2.30).

REASON: Population of OR is 2964621 is less than Population of Washington (5143186). This makes the Cases of Hepatitis C per 100 population (which gives the prevalence rate) more for OR than Washington.

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