5 Written questions
5 Matching questions
- How are laboratory abnormalities defined?
- Independent Variables
- Ecology of Medicine
- Internal Validity
- External Validity
- a "purported cause or predictor variables" p. 5
- b (Dr. Wheat) author? journal?....i think...Kerr White New England Journal of Medicine, Nov. 2, 1961 "Ecology of Medical Care"
- c As a fraction of the actual distribution (Page 29)
- d "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
- e "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
5 Multiple choice questions
- Probability of disease in a patient with a positive test result PV+=true positive/(true positive + false positive) p. 39
- variables describing a possible effect p. 5
- "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
- The probability of an event in a population under study. #new cases over a given period of time / # people in the group
5 True/False questions
Attributable Risk → The probability of an event in a population under study. #new cases over a given period of time / # people in the group
Confounders → Patient characteristics that may affect the results a study it is trying to measure. They can decrease the validity of a study.
Specificity → Proportion of people without the disease who have a negative test = true negatives/ (true negatives + false positives) p. 39
Prevalence → the proportion of persons in a defined population at a given point in time having the condition in question
John Snow → Did study of cholera