5 Written questions
5 Matching questions
- Approximately how many people live in the US?
- Number of People Living in the US with HIV.
- Number of People Known to be Living in Alabama with HIV
- Internal Validity
- 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.)
- 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
- c ...300,000,000
- d a process at any stage of inference tending to produce results that depart systematically from true values.
- e 500,000-1,000,000
5 Multiple choice questions
- Normal distribution curve. based in statistical theory, describes the frequency distribution of repeated measurements of the same physical object by the same measurement.
- Did study of cholera
- Def: Early detection of existing disease to reduce severity and complications
Ex. Screening for cancer
- How much of the risk is reduced in the experimental group compared with the control group. RRR=ARR/(rate of control group)
5 True/False questions
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
Baye's Theorem of Conditional Probabilities → The probability of disease after the test result is known.
Case Control Study → According to answers.com, 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.
Cohort → Probability of disease in a patient with a positive test result PV+=true positive/(true positive + false positive) p. 39
PPV → Probability of disease in a patient with a positive test result PV+=true positive/(true positive + false positive) p. 39