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5 Written questions

5 Matching questions

  1. Approximately how many people live in the US?
  2. bias
  3. Number of People Living in the US with HIV.
  4. Number of People Known to be Living in Alabama with HIV
  5. Internal Validity
  1. a 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.)
  2. b "degree to which the results of a study are correct for the sample of patients being studied...determined by how well the design, data collection, and analyses are carried out and..threatened by..biases and random variation" p. 10
  3. c ...300,000,000
  4. d a process at any stage of inference tending to produce results that depart systematically from true values.
  5. e 500,000-1,000,000

5 Multiple choice questions

  1. Normal distribution curve. based in statistical theory, describes the frequency distribution of repeated measurements of the same physical object by the same measurement.
  2. Did study of cholera
  3. Def: Early detection of existing disease to reduce severity and complications
    Ex. Screening for cancer
  4. How much of the risk is reduced in the experimental group compared with the control group. RRR=ARR/(rate of control group)
  5. 450,000

5 True/False questions

  1. Epidemiology"the extent to which repeated measurements of a stable phenomenon by different people and instruments at different times and places get similar results" Other words for this are reproducability and precision. p. 20


  2. Baye's Theorem of Conditional ProbabilitiesThe probability of disease after the test result is known.


  3. Case Control StudyAccording 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.


  4. CohortProbability of disease in a patient with a positive test result PV+=true positive/(true positive + false positive) p. 39


  5. PPVProbability of disease in a patient with a positive test result PV+=true positive/(true positive + false positive) p. 39


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