# ABSITE ch 44 statistics.txt

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1. Incorrectly rejecting null hypothesis
Type I error
2. Accepting the null hypothesis incorrectly
Type II error
3. Hypothesis that no difference exists between groups
Null hypothesis
4. Spread of data around a mean
Variance
5. Prospective study with random assignment; avoids treatment biases
Randomized controlled trial
6. Prospective study where patient and doctor are not told what treatment will be; avoids observational biases
Double blind controlled trial
7. Prospective study comparing disease rates between exposed and unexposed groups
Cohort study
8. Retrospective study in which those who have the disease are compared with a similar population who do not have the disease
Case-control study
9. Combining data from different studies
Meta-analysis
10. Comparison of means from two groups of quantitative data
Student�s T test
11. Comparison of means of before and after studies
Paired T test
12. Comparison of means for more than 2 groups
ANOVA
13. Comparison of two groups with categorical variables
Chi-squared test
14. Incidence in exposed/incidence in unexposed
Relative risk
15. Probability of making the correct conclusion
Power
16. Number of people with disease in a population
Prevalence
17. Number of new cases diagnosed over a certain time frame in a population
Incidence
18. Ability to detect disease, or true positives/(true positives + false negatives)
Sensitivity
19. Ability to state no disease is present, or true negatives/(true negatives + false negatives)
Specificity
20. Likelihood that with a positive result, the patient actually has the disease
PPV
21. Likelihood that with a negative result the patient does not have the disease
NPV
22. True positives + true negatives/true positives + true negatives + false positives + false negatives
Accuracy

## Card Set Information

 Author: alshada ID: 4859 Filename: ABSITE ch 44 statistics.txt Updated: 2010-01-23 21:51:33 Tags: statistics ABSITE Folders: Description: ABSITE ch 44 statistics Show Answers:

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