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Epidemiology E-Book

Store/Science

€21.00

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Details about Epidemiology E-Book:

Epidemiology, by award-winning educator and epidemiologist Leon Gordis, is a best-selling introduction to this complex science. Dr. Gordis leverages his vast experience teaching this subject in the classroom to introduce the basic principles and concepts of epidemiology in a clear, uniquely memorable way. He guides you from an explanation of the epidemiologic approach to disease and intervention, through the use of epidemiologic principles to identify the causes of disease, to a discussion of how epidemiology should be used to improve evaluation and public policy. ItÃ¢â‚¬â„¢s your best choice for an accessible yet rich understanding of epidemiology!Gain a solid foundation of basic epidemiologic principles as well as practical applications in public health and clinical practice.Visualize concepts vividly through abundant full-color figures, graphs, and charts.Check your understanding of essential information with 120 multiple-choice epidemiology self-assessment questions.Master the latest nuances in epidemiology thanks to a wealth of new and updated illustrations, examples, and epidemiologic data.

Sample questions asked in the 5th edition of Epidemiology E-Book:

All of the following are potential benefits of a randomized clinical trial, except: a. The likelihood that the study groups will be comparable is increased b. Self-selection for a particular treatment is eliminated c. The external validity of the study is increased d. Assignment of the next subject cannot be predicted e. The therapy that a subject receives is not influenced by either conscious or subconscious bias of the investigator

A colon cancer screening study is being conducted in Nottingham, England. Individuals 50 to 75 years old will be screened with the Hemoccult test. In this test, a stool sample is tested for the presence of blood. If the Hemoccult test result is negative, no further testing is done. If the Hemoccult test result is positive, the individual will have a second stool sample tested with the Hemoccult II test. If this second sample also tests positive for blood, the individual will be referred for more extensive evaluation. What is the effect on net sensitivity and net specificity of this method of screening? a. Net sensitivity and net specificity are both increased b. Net sensitivity is decreased and net specificity is increased c. Net sensitivity remains the same and net specificity is increased d. Net sensitivity is increased and net specificity is decreased e. The effect on net sensitivity and net specificity cannot be determined from the data

Two pediatricians want to investigate a new laboratory test that identifies streptococcal infections. Dr. Kidd uses the standard culture test, which has a sensitivity of 90% and a specificity of 96%. Dr. Childs uses the new test, which is 96% sensitive and 96% specific. If 200 patients undergo culture with both tests, which of the following is correct? a. Dr. Kidd will correctly identify more people with streptococcal infection than Dr. Childs b. Dr. Kidd will correctly identify fewer people with streptococcal infection than Dr. Childs c. Dr. Kidd will correctly identify more people without streptococcal infection than Dr. Childs d. The prevalence of streptococcal infection is needed to determine which pediatrician will\ correctly identify the larger number of people with the disease

The mortality rate from disease X in city A is 75/100,000 in persons 65 to 69 years old. The mortality rate from the same disease in city B is 150/100,000 in persons 65 to 69 years old. The inference that disease X is two times more prevalent in persons 65 to 69 years old in city B than it is in persons 65 to 69 years old in city A is: a. Correct b. Incorrect, because of failure to distinguish between prevalence and mortality c. Incorrect, because of failure to adjust for differences in age distributions d. Incorrect, because of failure to distinguish between period and point prevalence e. Incorrect, because a proportion is used when a rate is required to support the inference

Epidemiology E-Book

Store/Science

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