32 results
Negative Predictive Value Calculation - Probability that someone with a negative test truly does not have
Predictive Value Calculation ... Negatives #NegativePredictiveValue ... #NPV #Biostatistics ... #statistics #Epidemiology ... #Equations #calculations
Sensitivity is the proportion of truly diseased persons in the screened population who are identified as
that any given case ... PositivePredictiveValue #NegativePredictiveValue ... #Calculation #Table ... #PPV #NPV #Formulas ... #Statistics #Matrix
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Biostatistics #statistics ... Epidemiology #Equations #calculations ... #specificity #PPV ... #NPV
Positive Predictive Value Calculation - Probability that someone with a positive test actually has the disease

Positive
Predictive Value Calculation ... PositivePredictiveValue #PPV ... Biostatistics #statistics ... Epidemiology #Equations #calculations
Causes of Vertigo - Differential Diagnosis Algorithm
#Diagnosis #Neurology #Dizziness #Peripheral #Central #Algorithm #BPPV #Differential #Ddxof
Causes of Vertigo ... Differential Diagnosis Algorithm ... Peripheral #Central #Algorithm ... #BPPV #Differential
Causes of Post-Partum Fever - Differential Diagnosis Algorithm
6 W's for causes of PPF
 - Wind: pneumonia,
Causes of Post-Partum ... Differential Diagnosis Algorithm ... 6 W's for causes ... of PPF - Wind ... Differential #Diagnosis #Algorithm
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
Causes of Prolonged ... #Prolonged #PPT ... Differential #Diagnosis #Algorithm ... #Causes #Hematology
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
PPV: proportion ... prevalence is low, then PPV ... NPV: proportion ... specificity -> higher PPV ... Biostatistics #formulas #calculations
Dizziness - Central and Peripheral Causes - Differential Diagnosis
Central Causes:
 • Cerebrovascular:  vertebrobasilar, TIA, Wallenburg,
and Peripheral Causes ... Diagnosis Central Causes ... Acoustic Neuroma • BPPV ... Central #Peripheral #Causes ... Differential #Diagnosis #algorithm
Causes of Extravascular and Intravascular Hemolysis - Differential Diagnosis Algorithm
Extravascular - Spleen and RES-mediated hemolysis
 -
Causes of Extravascular ... Differential Diagnosis Algorithm ... Hemolysis within circulation ... Differential #Diagnosis #Algorithm ... #Causes #Hematology