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Statistics in Medicine

Statistics in Medicine

Statistics in Medicine. Unit 6: Overview/Teasers. Overview. Type I and Type II errors and statistical power; pitfalls of p-values Overview of statistical tests. Teaser 1, Unit 6.

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1.54k views • 131 slides
PTP 560

PTP 560

PTP 560. Research Methods Week 9. Thomas Ruediger, PT. Calculate Sn , Sp , LRs. Confidence Intervals with small samples. What is small sample size? Less than 30 (one of those special numbers in stats) Sampling distribution tends to spread out Standard normal curve not adequate

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424 views • 31 slides
Statistical Power

Statistical Power

Statistical Power. H o : Treatments A and B the same H A : Treatments A and B different. Critical value at alpha=0.05. Points on this side, only 5% chance from distribution A. Frequency. A. Area = 5%. A could be control treatment B could be manipulated treatment.

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581 views • 23 slides
Statistical Power

Statistical Power

Statistical Power. H o : Treatments A and B the same H A : Treatments A and B different. Critical value at alpha=0.05. Points on this side, only 5% chance from distribution A. Frequency. A. Area = 5%. A could be control treatment B could be manipulated treatment.

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583 views • 23 slides
Sample size

Sample size

Sample size. Study Design. Cohort Study When do you use it? What do you select participants on? Continuous variable. Study Design. Cohort Study Continuous exposure Example Measure sbp levels and follow people to see if they have a stroke. Outcome Stroke yes or no. Study Design.

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115 views • 9 slides

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