Anesthesia and Critical Care Reviews and Commentary (ACCRAC) Podcast Episode 295: Statistics for the Boards
Nov 18, 2024
Dive into the world of statistics crucial for medical board exams. Discover the types of data, from interval to categorical, and learn about mean, median, and mode. Explore the importance of null and alternative hypotheses, along with common statistical errors. Get insights on interpreting p-values and confidence intervals, while understanding frequentist versus Bayesian methods. Unravel the complexities of bias detection and the role of meta-analysis in clinical research, all while keeping the conversation engaging and informative.
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Interval Data Types and Tests
- Interval data can be discrete (integers only) or continuous (includes decimals).
- Both types use similar tests: t-tests for two samples and ANOVA for multiple samples under normal distribution assumptions.
Categorical Data and Tests
- Categorical data includes dichotomous, ordinal, and nominal types.
- Chi-square test is the primary statistical test for categorical data; Fisher's exact test is used for two-sample categorical data.
Mean vs Median and Variability
- Mean is influenced by extreme outliers, while median resists skewing, making it preferable with outliers.
- Standard deviation describes spread; one SD covers 68% of values around the mean in normal distribution.