Term
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Definition
Qualitative, Numbers used to classify data into groups
Ex. hair color, gender
Bar Graph
Measure of central tendency: Mode |
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Term
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Definition
Ranks, numbers used to rank data
Ex. economic status
Bar Graph
Measure of central tendency: Mode & Median |
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Term
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Definition
quantitative, numeric data with fixed intervals between values
ex. height, blood pressure, etc
Histogram
Measure of central tendency: Mode, Median and Mean |
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Term
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Definition
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Term
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Definition
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Term
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Definition
most frequent number
least useful |
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Term
| Distrubutions of Data: Skewed to the Right |
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Definition
[image]
Positively Skewed
mean > median |
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Term
| Distrubutions of Data: skewed Left |
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Definition
[image]
Negatively Skewed
median > mean |
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Term
| Distrubutions of Data: Kurtosis |
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Definition
More peaked than normal = positive
More flattened than normal = negative |
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Definition
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Definition
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Definition
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Term
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Definition
New, from cohort and clinical trials
Total # new cases over a specified time period/ Total population at risk over time period |
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Term
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Definition
All, from cross-sectional and clinical trials
depends on duration of disease
total # of disease at given pt in time/ Total pop. at the same time |
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Term
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Definition
1. State hypothesis
2. Decide statistical test
3. Select level of significance for test
4. Calculate
5. Draw and (re)state conclusion |
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Term
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Definition
Ho: No difference between two variables
if p>0.05 retain null |
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Term
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Definition
Incorrectly rejecting the null when p<0.05
False postive |
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Term
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Definition
Incorrectly retaining null when p>0.05
False negative
most common reason is insufficient sample size |
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Term
| probabilty of obtaining a false abnormal |
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Definition
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Term
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Definition
the probability a study will detect a clincally important difference if one exists
1-B
1-.20 = .80 or 80% |
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Term
| Therapy: Best study design? |
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Definition
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Definition
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Term
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Definition
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Definition
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Definition
| cohort study or case-control study |
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Term
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Definition
| Systems, Synopses, summaries (cochrane, UpToDate), studies (national library of medicine) |
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Term
| Therapy: best search term |
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Definition
| clinical trial [publication type] |
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Term
| diagnosis: best search term |
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Definition
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Term
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Definition
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Term
| etiology/harm: search term |
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Definition
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