Question

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 comparison groups aren mic status (SES) W sion that accidental among those of high SES s are not comparable 8. The proportion of individuals without a disease in the population who are negative by a screening test is known as the a. cutoff point b. negative predictive value c. specificity d. false negative crror rate who are identified as 9. The sensitivity of a screening test for a disease will be lowered by a relatively high number a. true positives b. false positives c. true negatives d. false negatives 10. A zoonosis is a. a disease occurring in vertebrate animals which can be transmitted to humans b. an allergic reaction following exposure to insect vectors the proportion of individuals in a large group who are in contact with animals d. an unvaccinated animal which could be a potential host 11. Which of the following is true! the spread of an infectious agent by a vector involves inanimate nonliving objects plotting an epidemic curve may permit the determination of median incubation pa indirect transmission refers to airbome transmission only immunity in vertebrate animals is known as herd immunity An outbreak of illness was investigated and the findings shown below. Ate Specific Food Total Number Number Ill 150 105 Potato salad Hamburger 42 the infective item is most likely to be hamburger the infective viet is most likely to be potato salad the infective item is most likely to be the combination of potato salad with hamburger similar data on a group to eating the potato salad or hamburger must be collected in order to reach a valid conclusion

Answer 1

7. D. May be incorrect because the study and comparison groups are not comparable.

8. Specificity

9. false positive

10. a disease occurring in vertebrate animals which can be transmitted to humans

11. Plotting an epidemic curve may permit the determination of median incubation period

12. Similiar data on group not eating the potato salad or hamburgers must be collected in order to reach a valid conclusion