15 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
) / Specificity ... Sensitivity vs ... Biostatistics #statistics ... #specificity #PPV ... #NPV
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
Specificity is the ... #Specificity #PositivePredictiveValue ... #NegativePredictiveValue ... #NPV #Formulas ... #Statistics #Matrix
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Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Negatives #NegativePredictiveValue ... #NPV #Biostatistics ... #statistics #Epidemiology
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Galactomannan Testing Sensitivity ... Specificity and ... 96% • Higher specificity ... NPV >90% (In most ... invasive dz • Sensitivity
The SALT Mass Casualty Triage Approach
 - SALT stands for “Sort, Assess, Lifesaving interventions, and Treatment
data regarding sensitivity ... , specificity, or ... MassCasualty #Incident #Algorithm
It's eye-opening to realize how many tests with reasonable-appearing sensitivity or specificity will end up being
reasonable-appearing sensitivity ... or specificity ... or sensitivity ... #Diagnosis #Statistics ... #Specificity #Graph
Chronic Hep B - How to screen for HCC
-q6 months ultrasounds
-Use of AFP has been found
lack adequate sensitvity ... nad specificity ... AASLD diagnostic algorithm ... LiverNodule #Screening #Algorithm
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Sensitivity (rule ... Specificity (rule ... NPV: proportion ... FN) Higher specificity ... Higher sensitivity
Diagnostic algorithm for the workup of hypercalcemia. The diagnostic workup for patients presenting with hypercalcemia rests
Diagnostic algorithm ... value of 0.0115, sensitivity ... ) was 0.80 and specificity ... #Differential #Algorithm
This requires defining some general cutoff values for likelihood ratios.  These are admittedly arbitrary, but
relationship between sensitivity ... /specificity and ... #Diagnosis #Statistics ... #Sensitivity #Specificity