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5 Written questions

5 Matching questions

  1. Gold Standard
  2. Approximately how many people live in AL?
  3. Types of Prevention:
    Primary Prevention
  4. Absolute Risk Reduction
  5. Relative Risk Reduction
  1. a Term describing the best way to tell whether or not a disease or condition is truly present or not, i.e. using a throat culture to confirm clinical impression of strep throat. "Throat culture in this case would be a -----." p. 36 (There should be the understanding that no test is perfect.)
  2. b Definition: Preventing the initial development of a disease
    Ex. Immunization
  3. c How much of the risk is reduced in the experimental group compared with the control group. RRR=ARR/(rate of control group)
  4. d ...4,700,000
  5. e ARR (same as Attributable Risk), It is the absolute value of the control group event rate - the experimental group event rate.

5 Multiple choice questions

  1. "degree to which the results of an observation hold true in other settings" "generalizability" "Assuming that the results of a study are true, do they apply to my patients as well?" p. 10
  2. As a fraction of the actual distribution (Page 29)
  3. 11,700. Of these 11,700 known to have HIV, ~4,500 have AIDS. (This number with AIDS will probably not be asked since the term AIDS is somewhat subjective. The viral load limit that a person must have to be considered suffering from AIDS has been lowered in recent years.)
  4. Def: Early detection of existing disease to reduce severity and complications
    Ex. Screening for cancer
  5. According to, a case control study is a usually retrospective study in which individuals with and without a condition are examined and past medical history etc. is statistically analyzed for correlation.

5 True/False questions

  1. Relative RiskA general term for measures of association calculated from data in a 2x2 table. = Risk of disease in exposed (a/(a+b)) / Risk of disease in unexposed (c/(c+d))


  2. Pretest ProbabilityThe probability of disease after the test result is known.


  3. Case Fatality RateProportion of people with a disease who have a positive test for the disease = true positives/(true positives + false negatives) p. 39


  4. SensitivityProportion of people without the disease who have a negative test = true negatives/ (true negatives + false positives) p. 39


  5. Baye's Theorem of Conditional ProbabilitiesThe prevalence of disease in a specified group of subjects.