12 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
and Epidemiology Equations ... disease present Specificity ... Sensitivity) / Specificity ... Biostatistics #statistics ... #Epidemiology #Equations
Specificity Calculation - Probability that a test correctly identifies those without the disease (true negative rate)

Specificity
Specificity Calculation ... Probability that a test ... TN / (FP + TN) Specificity ... Biostatistics #statistics ... #Epidemiology #Equations
It's eye-opening to realize how many tests with reasonable-appearing sensitivity or specificity will end up being
sensitivity or specificity ... despite having a specificity ... #Diagnosis #Statistics ... #Sensitivity #Specificity ... #Graph
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
the screening test ... Specificity is the ... the screening test ... #Sensitivity #Specificity ... NPV #Formulas #Statistics
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Sensitivity Calculation - Probability that a test correctly identifies those with the disease (true positive rate)

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

Positive
with a positive test ... Biostatistics #statistics ... #Epidemiology #Equations
This requires defining some general cutoff values for likelihood ratios.  These are admittedly arbitrary, but
between sensitivity/specificity ... #Diagnosis #Statistics ... #Sensitivity #Specificity ... #Relationship #Graph
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
with a negative test ... Biostatistics #statistics ... #Epidemiology #Equations
Diagnosis Adrenal Insufficiency - Algorithm

Step 1) Screening Test: 6-8AM Cortisol Level
 - Early morning cortisol levels
Insufficiency - Algorithm ... Step 1) Screening Test ... have almost 100% specificity ... ) Confirmation Test ... Insufficiency #Algorithm
Our approach to the diagnosis and initial management of patients with suspected HIT. Our approach is
HIT laboratory tests ... and uncertain specificity ... Thrombocytopenia #Algorithm