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epidemiology biostatistics calculations diagnosis statistics equations mnemonic npv formulas sensitivity matrix table usmle
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
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 Important Biostatistics and Epidemiology Equations Sensitivity = TP / (TP + FN) = true positives / disease
disease present Specificity ... Sensitivity) / Specificity ... Sensitivity vs Specificity ... Epidemiology #Equations #calculations ... #PPV #NPV
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease Positive
Predictive Value Calculation ... Positives #PositivePredictiveValue ... #PPV #Biostatistics ... Epidemiology #Equations #calculations
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Predictive Value Calculation ... Negatives #NegativePredictiveValue ... #NPV #Biostatistics ... 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 ... prevalence is low, then PPV ... FN) Higher specificity ... Biostatistics #formulas #calculations
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