Ace Your First Aid for the USMLE Step 1 (2021) Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Physician Assistant (PA) Students
With Picmonic, facts become pictures. We've taken what the science shows - image mnemonics work - but we've boosted the effectiveness by building and associating memorable characters, interesting audio stories, and built-in quizzing. Whether you're studying for your classes or getting ready for a big exam, we're here to help.
First Aid for the USMLE Step 1 (2021) | Physician Assistant (PA) School Study Aid
Proportion of Positive Tests that are True Positive
Probability that Person with Positive Test has Disease
TP (True Positives)
Divided by /
All Positive Test Results
TP + FP
Varies Directly with Prevalence
Negative Predictive Value (NPV)
Proportion of Negative Tests that are Truly Negative
Probability that Person with Negative Test is Healthy
(TN) True Negatives
Divided by /
All Negative Test Results
(FN + TN)
Varies Inversely with Prevalence
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