6 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... disease present Specificity ... = Rule IN #Biostatistics ... #statistics #Epidemiology ... #PPV #NPV
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
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
Specificity is the ... #Sensitivity #Specificity ... 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
NegativePredictiveValue #NPV ... #Biostatistics ... #statistics #Epidemiology
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
PositivePredictiveValue #PPV ... #Biostatistics ... #statistics #Epidemiology
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... Specificity (rule ... NPV: proportion ... FN) Higher specificity ... sensitivity -> higher NPV