Calculations: Answer the following questions in the space provided. Show all of your work.
Calculate the attack rate for those who ate potato salad using the data in Table 1.
Table 1. Food-specific attack rates for items consumed
ATE DIDN’T EAT
Item consumed Sick Well Sick Well
Potato salad 80 10 90 30
Potato chips 70 25 35 70
Calculate the incidence rate of SARS in Shanghai in 2004 using the data in Table 2.
Table 2. SARS cases in Shanghai China
Year confirmed cases population at risk
2004 137 16, 740,000
2005 115 17, 560,000
Calculate the prevalence rate of hypertension in the US in 2000 using the data in Table 3.
Table 3. People with Hypertension in the United States
Year new cases existing cases population
1999 400,000 60,000,000 275,000,000
2000 375,000 65,000,000 300,000,000
Calculate the annual death rate from all causes for Tanzania in 2005 using the data in Table 4.
Table 4. Deaths in Tanzania (population 40,000,000)
Year malaria HIV/AIDS heart disease diarrhea all other causes
2005 8,000 4,000 1,000 10,000 5,000
Calculate the specific death rate due to malaria in Tanzania in 2005 using the data in Table 4.
Calculate the proportionate mortality rate due to HIV/AIDS in Tanzania in 2005 using the data in Table 4.
Calculate the case fatality rate for prostate cancer for the year 2008 using the data in Table 5.
Table 5. Prostate Cancer
New diagnoses 2007-2008 alive 1 year after diagnosis alive 5 years after diagnosis
6,500 6,450 6,200
Calculate the age-adjusted rate of osteoporosis in Tuscany and Naples using the direct method and data in Table 6.
Table 6. Osteoporosis in Tuscany and Naples
Age Standard Pop. Tuscany pop. Tuscany rate per 1000 Naples Pop. Naples rate per 1000
0-50 800,000 500,000 80 300,000 10
50+ 500,000 400,000 160 800,000 25
Calculate the sensitivity of the screening test for alcoholism using the data in Table 7.
Table 7. Alcohol Screening Test
Results of the Screening Alcoholic non-alcoholic
Positive 160 320
Negative 40 480
Calculate the specificity of the screening test for alcoholism using the data in Table 7.
Calculate the percentage of false negatives of the screening test for alcoholism using the data in Table 7.
Calculate the percentage of false positives of the screening test for alcoholism using the data in Table 7.
Calculate the positive predictive value of the screening test for alcoholism using the data in Table 7.
Calculate the probability of surviving 5 years using the data from Table 8.
Table 8. Probability of Survival for Each Year of the Study
P1 = 52.5%
P2= 46.1%
P3 = 65.5%
P4= 69.6%
P5 = 80.0%
P6 = 95%
P7 = 98%
Calculate the power of a study given that the probability of a type I error is 0.05 and the probability of type II error is 0.80.
Subject | Mathematics |
Due By (Pacific Time) | 04/26/2014 07:00 am |
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