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Flashcards in Behavioral Science Deck (66)
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1

What is the purpose of a cross-sectional study?

to collect data from a group of people at a particular point in time

2

What does a cross-sectional study assess?

frequency of disease

3

What does a cross-sectional study report?

prevalence

4

What is the purpose of a case control study?

compares a group of people with a disease to a group of people w/o the disease

5

What does a case control study report?

odds ratio

6

What is the function of a cohort study?

compares a group of people with an exposure to a group of people w/o an exposure

7

What does a cohort report?

relative risk

8

What is the function of a Phase One study?

is it safe

9

What is the function of a Phase Two study?

Does it work

10

What is the function of a Phase Three study?

does the drug work better than the current gold standard

11

What is the function of a Phase Four study?

long term safety

12

What is the equation for sensitivity?

TP/ TP + FN

13

What is the equation for specificity?

TN / TN + FP

14

What is the equation for Positive Predictive Value?

TP/TP + FP

15

What is the equation for Negative Predictive Value?

TN/TN + FN

16

What two things does Positive Predictive Value correlate with?

prevalence or pre-test probability

17

What does NPV inversely correlate with?

prevalence

18

If there is less overlap between to normal distributions, is the test more or less sensitive/specific?

more sensitive and specific

19

If there is more overlap between to normal distributions, is the test more or less sensitive/specific?

less sensitive and specific

20

What is a Type One error?

seeing a difference when there is no difference

21

What is a Type Two error?

not seeing a difference when there is one

22

Does alpha correspond to Type One of Type Two?

one

23

Does beta correspond to Type One of Type Two?

two

24

What is the equation for power?

1- beta

25

What is another name for reliable?

precise

26

What is the equation for odds ratio?

AD/BC

27

What is the equation for Relative Risk?

[A/(A+B)]/C/(C+D)]

28

What does Relative Risk measure?

risk of developing disease in exposed group to unexposed group

29

What is the equation for Attributable Risk?

(A/A+B) - (C/C+D)

30

What is the equation for NNT?

1/ARR