# drug lit stats

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1. what determines statistical significance
alpha
2. what determines clinical significance
delta
3. variable that is being manipulated
factors or treatments
independent
4. variable that is the outcome
dependent
5. PICO
• problem
• intervention
• comparison
• outcome
6. intervention plus comparison is what
independent variable
7. discrete data
• nominal and ordinal
• lists/tables
8. continuous data
• interval and ratios
• graphs
9. male - female
nominal
10. difference between the poisson and the binomial distribution
binomial - all eligibe phenomena are studied

poisson - only the cases with a particular outcome are studied
11. scale - severity (pain scale)
ordinal
12. constant and defined units of measurement
scale that can cross 0. -20-----20
temperature
interval
13. scale that doesn't cross the O. 0-----32
ratio
14. normal curve tests
parametric
15. test of non-normal curve
nonparametric
16. when is a fisher's exact test used
if the expected value is less than 5
17. which scales have a SD
interval and ratio
18. standard deviation expressed as percentage of the mean
useful to compare the relative differences between two or more samples
coefficient of variation
19. the statistics found that the null hypothesis is false when it is really true
type I or alpha
20. the statistics found the null hypothesis is true when it is really false
type II or beta
21. what is the P in PICO studing
the population at risk
22. predetermined largest probability of a false non-rejection of the null the researchers are willing to accept
• beta
• the smaller selected the larger the sample size that is needed
23. probability that a difference will be detected and the null hypothesis will be rejected when it should be rejected
power
24. what is power usually
80%
25. what does power depend on
• sample size
• alpha level
• delta
26. what is beta usually
20%
27. determine how much of a change want to see
• effect size
• delta
28. range of values that has a specified probability of containing the parameter being estimated
confidence interval
29. 3 SEM
99%
30. 2 SEM
95%
31. 1 SEM
68%
32. how many times more likely an outcome is in one group compared to the other
risk ratio
33. odds of an outcome in one group compared to the odds of the outcome in the other group
odds ratio
34. the probability that a healthy person will develop A disease in a specified period
incidence
35. the number of cases at a specific time
prevalence
 Author: tab ID: 188592 Card Set: drug lit stats Updated: 2012-12-11 01:03:20 Tags: drug lit stats Folders: Description: drug lit stats Show Answers: