8101 results
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... individual studies Clinical ... diseases, describe clinical ... negative tests are ... #Epidemiology #Biostatistics
TYPE I & TYPE II ERRORS 

SENSITIVITY & SPECIFICITY = SNOUT & SPIN 
Sensitive Tests that
Sensitive Tests that are ... Specific Tests that are ... Type2 #Errors #Biostatistics
Important Biostatistics and Epidemiology Equations

Sensitivity = TP / (TP + FN) = true positives / disease
Important Biostatistics ... = Rule IN #Biostatistics
An Overview on P-Values

"The widespread use of "statistical significance" (generally interpreted as "p <= 0.05") as
#PValues #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
Aphasia - Pathophysiology and Clinical Findings
Broca's Aphasia - Expressive language impairment: non-Fluent
 - Sensory speech areas
Pathophysiology and Clinical ... Sensory speech areas ... of nearby motor areas ... of other nearby areas ... of Wernicke's Area
Misinterpretation of the P-value 

P-value - Probability for a given statistical model under the null hypothesis
not explain the clinical ... Misinterpretation #biostatistics
Flail Chest on Physical Exam
Flail chest after 3 or more ribs are broken in 2 areas
3 or more ribs are ... broken in 2 areas ... #respiratory #clinical
Janeway Lesion: Flat, painless, erythematous lesions seen on the palm of this patient's hand. While
frequently associated
this case, they are ... aneurysm (inflamed area ... UCSD Catalog of Clinical ... Images #Clinical