18 results
diagnosis testing falsepositives laboratory ebm sensitivity uds urine calculations drugscreens epidemiology falsenegative falsenegatives fecal fobt guaiac interpretation mnemonic occultblood pvalues
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix Sensitivity refers to the test's ability to correctly
#Specificity #FalsePositive ... 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
Urine Drug Screens - Common drugs that may cause false positive tests Amphetamines: Bupropion, Labetalol, Methylphenidate, Phenylephrine,
Toxicology #Diagnosis #FalsePositive
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
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS) Marijuana Metabolites • dronabinol,
#FalsePositives
What is Fecal Occult Blood Testing (FOBT) • Screening for colorectal cancer in average risk population
#FOBT #Guaiac #FalsePositives
USMLE Epidemiology and Biostatistics Summary Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
Epidemiology and Biostatistics ... #Epidemiology #Biostatistics
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