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In August 1976, tuberculosis was diagnosed in a high school student (INDEX CASE) in Corinth, Mississippi. Subsequently, laboratory studies revealed that the student's disease was caused by drug-resistant tubercule bacilli. An epidemiologic investigation was conducted at the high school. Table E4.6 gives the rates of positive tuberculin reaction, determined for various groups of students according to degree of expo-sure to the index case. Calculate the 95% confidence interval for the rate of positive tuberculin reaction separately for each of the two subpopula- tions, those with high exposure and those with low exposure.
TABLE E4.6
Exposure Level
Number Tested
Number Positive
High
129
63
Low
325
36
1.an experiment was conducted to determine the effects of three different pesticides p1p2p3 on the yield of three
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what is the post-test probability of disease being present in a patient with a positive test result for test A if a cutoff value of 4.0 mg/ml is chosen?
give an example of global sustainability that demonstrates your understanding of the
Tread wear was found to be 80,000 miles with a standard deviation of 5,600 miles. What is the best estimate of the average tread life in miles for the entire population of these tires?
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