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epidemiology biostatistics calculations diagnosis equations mnemonic npv formulas positivepredictivevalue sensitivity matrix table usmle
Important Biostatistics and Epidemiology Equations Sensitivity = TP / (TP + FN) = true positives / disease
disease present Specificity ... Sensitivity) / Specificity ... Biostatistics #statistics ... Epidemiology #Equations #calculations ... #PPV #NPV
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
Specificity is the ... PositivePredictiveValue #NegativePredictiveValue ... #Calculation #Table ... #PPV #NPV #Formulas ... #Statistics #Matrix
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 Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Predictive Value Calculation ... Negatives #NegativePredictiveValue ... #NPV #Biostatistics ... #statistics #Epidemiology ... #Equations #calculations
Specificity Calculation - Probability that a test correctly identifies those without the disease (true negative rate) Specificity
Specificity Calculation ... negative rate) Specificity ... TN / (FP + TN) Specificity ... Biostatistics #statistics ... Epidemiology #Equations #calculations
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease Positive
Predictive Value Calculation ... PositivePredictiveValue #PPV ... Biostatistics #statistics ... Epidemiology #Equations #calculations
USMLE Epidemiology and Biostatistics Summary Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Specificity (rule ... PPV: proportion ... FN) Higher specificity ... -> higher PPV ... Biostatistics #formulas #calculations
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