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Physician Assistant (PA)
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First Aid for the USMLE Step 1 (2021)
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Page 260 -

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.

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First Aid for the USMLE Step 1 (2021) | Physician Assistant (PA) School Study Aid

Page 260 -
4 Picmonics to Learn | 7 mins
Cross-Sectional Study
Observational
(Asks) "What's Happening?"
Data at One Specific Point in Time
(Finds) Frequency of Disease
Measurement
Prevalence
picmonic thumbnail
49 secs
Case Control Study
Observational
Retrospective
Compares those with disease to those without
(Asks) "What happened?"
Measurement
Odds Ratio
picmonic thumbnail
47 secs
Cohort Study
Observational
Longitudinal
Studies risk from exposure
Retrospective
(Asks) "Who developed disease?"
Prospective
(Asks) "Who will develop disease?"
picmonic thumbnail
1 min
Common Statistical Tests
Determine If Comparing Numerical Or Categorical Variables
Numerical Variables
T-Test For Comparing Means Of Two Groups
ANOVA For Comparing Means In Greater Than Three Groups
Comparing Mean Values On Normal/Bell Distribution
Categorical Variables
Chi-Squared Test For Comparing Categorical Outcomes In Large Sample Sizes
Fisher's Exact Test For Comparing Categorical Outcomes In Small Sample Sizes
picmonic thumbnail
4 mins

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