ABSITE ch 44 statistics.txt

Incorrectly rejecting null hypothesis

Accepting the null hypothesis incorrectly

Hypothesis that no difference exists between groups

Spread of data around a mean

Prospective study with random assignment; avoids treatment biases

Prospective study where patient and doctor are not told what treatment will be; avoids observational biases

Prospective study comparing disease rates between exposed and unexposed groups

Retrospective study in which those who have the disease are compared with a similar population who do not have the disease

Combining data from different studies

Comparison of means from two groups of quantitative data

Comparison of means of before and after studies

Comparison of means for more than 2 groups

Comparison of two groups with categorical variables

Incidence in exposed/incidence in unexposed

Probability of making the correct conclusion

Number of people with disease in a population

Number of new cases diagnosed over a certain time frame in a population

Ability to detect disease, or true positives/(true positives + false negatives)

Ability to state no disease is present, or true negatives/(true negatives + false negatives)

Likelihood that with a positive result, the patient actually has the disease

Likelihood that with a negative result the patient does not have the disease

True positives + true negatives/true positives + true negatives + false positives + false negatives