77 results
Sensitivity Calculation - Probability that a test correctly identifies those with the disease (true positive rate)

Sensitivity
Calculation - Probability ... Biostatistics #statistics ... #Epidemiology #Equations
Specificity Calculation - Probability that a test correctly identifies those without the disease (true negative rate)

Specificity
Calculation - Probability ... Biostatistics #statistics ... #Epidemiology #Equations
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
Calculation - Probability ... Biostatistics #statistics ... #Epidemiology #Equations
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Calculation - Probability ... Biostatistics #statistics ... #Epidemiology #Equations
To improve the usefulness of the serum creatinine concentration as a marker of kidney function, prediction
function, prediction equations ... Cockcroft-Gault equation ... Disease (MDRD) equation ... version of this equation ... , render these equations
Misinterpretation of the P-value 

P-value - Probability for a given statistical model under the null hypothesis
P-value - Probability ... for a given statistical ... equality of 2 statistical ... not measure the probability ... lower the pretest probability
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
and Epidemiology Equations ... Biostatistics #statistics ... #Epidemiology #Equations
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
indicates the probability ... a case, or the probability ... screening test: the probability ... NPV #Formulas #Statistics
Likelihood Ratios - Probability
Remember 2/5/10 and 15/30/45:
 • LR of 2 increases the probability by 15%
Likelihood Ratios - Probability ... increases the probability ... increases the probability ... of 10 increases probability ... decreases the probability
Positive and Negative Likelihood Ratios Calculations
#Diagnosis #Likelihood #Ratios #LR #Calculations #Equations #Positive #Negative
#Calculations #Equations