2281 results
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
Estimated Medical Radiation Doses for 5 Year-Old Child

3-view ankle	0.0015 mSv	1/14th CXRs
2-view chest	0.02 mSv	1 CXRs
Anteroposterior and lateral
0.0015 mSv 1/14th CXRs ... chest 0.02 mSv 1 CXRs ... scan 6.2 mSv 310 CXRs ... scan 15.3 mSv 765 CXRs ... through 1 mSv 50 CXRs
Sarcoidosis 
Systemic non-caseating granulomatous disease. 
Patients classically have mediastinal hilar lymphadenopathy. 
CXR is abnormal in 90%
CXR is abnormal ... Afrocaribbeans. 20-40% are
Causes of Chronic Pediatric Cough - Differential Diagnosis Algorithm
Poor Growth
 - Non-Specific CXR
- Non-Specific CXR ... Infection - Abnormal CXR ... Asthma - Abnormal CXR ... Anomaly - Normal CXR
Likelihood Ratios - Probability
Remember 2/5/10 and 15/30/45:
 • LR of 2 increases the probability by 15%
LRs #diagnosis #biostatistics
Coins on Chest XRay - Trachea vs Esophagus

Coins in the sagittal plane on X-ray are more
plane on X-ray are ... Peds #Pediatrics #CXR
Bronchopneumonia Consolidation Pattern on Chest X-Ray

Patchy areas of consolidation that may be initially limited to one
X-Ray Patchy areas ... #Chest #XRay #CXR