24) An outbreak due to exposure of a group of persons to the same harmful influence common to the individuals in the group is known as:
30) Which of the following measures of disease burden is determined from a screening test?
Answer: Epidemic ( It is a condition of transmission of disease or infection due to exposure of a group of people to the same harmful influence common to the individual in the group.)
The prevalence rate such as morbidity and mortality as well as financial cost can be determined from screening test.
24) An outbreak due to exposure of a group of persons to the same harmful influence...
A new screening test for Type II diabetes was evaluated/validated based on a group of 800 persons, 20% of whom were known to have the disease based on a previous diagnosis. Validation results included the following: (1) the screening test accurately identified 140 persons as having the disease; (2) the screening test accurately ruled out 500 persons as NOT having the disease. (A) What is the estimated sensitivity of the new screening test? (B) What is the estimated specificity of...
Which of the following is characteristic of a single exposure common vehicle outbreak? a. Wide range in incubation times for sick individuals b. There is an exponential increase in secondary cases following initial exposures c. Long latency period before many illnesses develop d. The epidemic curve has a normal distribution when plotted against the logartihm line e. Cases include only those who have been exposed to sick persons
1) The epidemic curve for both the Hepatitis Outbreak and Oswego Outbreak case studies are indicative of this type of outbreak. A) propagated (progressive source) B) continuous common source C) point source D) confirmed 2) What is the term used to describe; "The severity of the disease; measured by the case fatality ratio (CFR%)". 3) If a male participant in an HIV study considers himself heterosexual, yet has a history of sex with men, he may not reveal the homosexual...
11. In a cross-sectional study, the investigator measures the exposure and the outcome at the same time in a sample of individuals. The following data are from a hypothetical cross-sectional study that tested the hypothesis that persons who engage in recreational physical activity are less likely to have trouble sleeping. Trouble sleeping (% yes) Recreational physical activity: Yes 20% No 40% What conclusions can you draw from these results about the association between recreational physical activity and trouble sleeping? Please...
accidental poisoning showed the 7. Records for 300 deaths in children from accidental poisoni died, there were five times as many children whose socioecono there were children whose SES was rated as high. The conclusie Tive times more common among children of low SES than aman a. is correct b. may be incorrect because there may have been interviewer bi c. may be incorrect because the comparison is not based on rate d. may be incorrect because the study and...
Multiple Question: 12. The relative risk for dying from lung cancer among smokers is 10. The relative risk for dying from heart disease among smokers is 1.5. The etiologic fraction for lung cancer due to smoking is 0.8 and the etiologic fraction for heart disease due to smoking is 0.2. Based on these finding, we can say that Smoking seems much more likely to be causally related to heart disease than to lung cancer. Smoking seems much more likely to...
9. Bias is less likely to invalidate a cohort study used to assess the risk of disease due to an exposure because: A. The presence or absence of exposure is determined prior to disease occurrence B. The sample sizes in cohort studies are large C. Disease status is always known at the start of the study D. Incident cases of the disease are distinguished from prevalent cases in the analyses E. Analyses are based on a comparison of the proportion...
Signature Cou Questions 1-16 Questions 17-32 Questions 33-35 I point each. 2 points each. 4 points each. For questions 1-29, select one answer and circle. Please do not write your answer in the margin. 1. Age-adjusted mortality rates are used to determine the number of deaths that occurred in specific age groups in a population b. correct mortality rates for missing age information c. eliminate the effects of differences in the age distributions of populations when comparing mortality rates d....
An outbreak of this disease, an illness with high mortality, was observed in captured wild prairie dogs at a commercial exotic animal distributor in Texas. Before shipments were halted on 1 August 2002, approximately 250 of an estimated 3,600 prairie dogs that passed through the Texas facility had died. The sick animals were believed to be part of a single shipment of prairie dogs that were caught in South Dakota starting on 18 May and shipped to the Texas distributor...
Case Report #5 On July 4, 2007, Florida's Central District Health Department (CDHD) received a complaint of several ill persons with watery diarrhea after attendance at a municipal splash park on June 26. Water samples collected from splash features and an adjacent drinking fountain tested positive. The report by Florida Department of Health summarized the investigation of the outbreak and highlights the importance of splash park design, operation, access to hygiene facilities, and public education in prevention of waterbome parasites...