2431 results
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics ... #specificity #PPV ... #NPV
Causes of Vertigo - Differential Diagnosis Algorithm
#Diagnosis #Neurology #Dizziness #Peripheral #Central #Algorithm #BPPV #Differential #Ddxof
Causes of Vertigo - Differential ... Central #Algorithm #BPPV ... #Differential #
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... PPV: proportion ... prevalence is low, then PPV ... specificity -> higher PPV ... #Epidemiology #Biostatistics
Fungal Biomarkers: Comparing Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 •
Spec -80% for IA, PPV ... < 50%, NPV > 90%
Back to Basics: Postpartum Hemorrhage

#Diagnosis #Management #Postpartum #Hemorrhage #PPH #4Ts #Differential
Postpartum #Hemorrhage #PPH ... #4Ts #Differential
Genital Ulcer - Differential Algorithm
Painful
 - H. ducreyi (Chancroid)
 - HSV
Painless
 - T pallidum (Chancre)
 -
Genital Ulcer - Differential ... Chlaymydia - HPV ... Genital #Ulcers #Differential
TYPE I & TYPE II ERRORS 

SENSITIVITY & SPECIFICITY = SNOUT & SPIN 
Sensitive Tests that
Type2 #Errors #Biostatistics
An Overview on P-Values

"The widespread use of "statistical significance" (generally interpreted as "p <= 0.05") as
#PValues #BioStatistics
Causes of Post-Partum Fever - Differential Diagnosis Algorithm
6 W's for causes of PPF
 - Wind: pneumonia,
Post-Partum Fever - Differential ... for causes of PPF ... PostPartum #Fever #PPF ... #Differential #
Causes of Prolonged PT (INR), Prolonged PTT
 • Prolonged PT (INR), Prolonged PTT
 • Prolonged PT
#Prolonged #PPT ... #PT #INR #Differential