Below you will find links to decision-making tools and exercises developed by Alan Schwartz and used for evidence-based medicine or medical decision making. Each link opens in its own window.
Tools
- Diagnostic Test Calculator - Given a 2x2 table (or prevalence/sens/spec or prevalence/LRs), compute everything else, including confidence intervals and optionally the impact of the test on action thresholds, and display a graphical nomogram. The Perl source code for the calculator is available under an open source software license. A mobile version is now available for use on iPhones and other small-screen browsers.
- NNT/NNH Calculator - Given information about probability of an event under control and experimental treatment, calculate risk increase/decrease and number needed to treat or harm, including confidence intervals.
Exercises
- Diagnostic Test Cutoffs - A graphical demonstration of the effect of changing cutoff scores on sensitivity and specificity of a test.
- Statistical Testing Thresholds - A graphical demonstration like the above, but written in terms of statistical test theory (type I and II error)
- Diagnostic test exercise - Test your knowledge about properties of diagnostic tests.
- Utility Assessment - Assess your utility for an health state using standard gamble, time tradeoff, and rating scale techniques.
- Multi-attribute Utility Assessment - Assess the utility of pain killers using multiple attributes, weighted by importance. Demonstrates the SMARTER system of MAUT.
- Markov model simulation - Simulates a simple hypothetical markov model for diabetes.
- Cost-effectiveness perspectives exercise - Perform some analyses of the cost-effectiveness of different breast cancer screening and treatment policies.
Workshops
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This Resource Successfully Peer Reviewed by MedEdPORTAL on 4/13/06.
MedEdPORTAL Publication Number: 209
Alterations to this Resource Created After This Date Have Not Been Reviewed By MedEdPORTAL.
