17 results
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... median < mode) Reliability ... #Epidemiology #Biostatistics
Venous Oxygen Saturation to qualify reliability of VBGs
#Diagnosis #VBG #ABG #Saturation #Conversion #Reliability #Comparison
Saturation to qualify reliability ... Saturation #Conversion #Reliability
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics
Algorithm showing a stepwise approach to the assessment and investigation of a possible neuropathy. CIDP, chronic
neuropathy with liability
An Overview on P-Values

"The widespread use of "statistical significance" (generally interpreted as "p <= 0.05") as
#PValues #BioStatistics
TYPE I & TYPE II ERRORS 

SENSITIVITY & SPECIFICITY = SNOUT & SPIN 
Sensitive Tests that
Type2 #Errors #Biostatistics
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
ConfusionMatrix #Biostatistics
Likelihood Ratios - Probability
Remember 2/5/10 and 15/30/45:
 • LR of 2 increases the probability by 15%
LRs #diagnosis #biostatistics
Mains Electricity Failure - Guidelines for Crises in Anaesthesia
Unexpected total power failure is rare and unpredictable.
C). ❽ Assess reliability
Misinterpretation of the P-value 

P-value - Probability for a given statistical model under the null hypothesis
Misinterpretation #biostatistics