13 results
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
FalsePositive #FalseNegative ... ConfusionMatrix #Biostatistics
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics
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
Likelihood Ratios - Probability
Remember 2/5/10 and 15/30/45:
 • LR of 2 increases the probability by 15%
LRs #diagnosis #biostatistics
Misinterpretation of the P-value 

P-value - Probability for a given statistical model under the null hypothesis
Misinterpretation #biostatistics
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
FalsePositives #FalseNegatives
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... #Epidemiology #Biostatistics
Causes of False-Positive and False-Negative IGRA and TST Results

#Diagnosis #TB #Tuberculosis #Tuberculin #SkinTest #TSTs #IGRA #FalseNegatives
SkinTest #TSTs #IGRA #FalseNegatives
P-Value Significance - Visualized in number of "heads in a row"

- Jonas Obleser, PhD - https://twitter.com/jonasobleser

#PValues
heads #CoinFlip #Biostatistics