Ace Your First Aid for the USMLE Step 1 2019 Classes and Exams with Picmonic: #1 Visual Mnemonic Study Tool for Medical (MD/DO) 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 2019 | Medical (MD/DO) School Study Aid
Measures Association Between an Exposure and an Outcome
Odds of Exposure in Diseased (Sick) Group
a / c
Odds of Exposure in Healthy Group
b / d
=1 Exposure does not affect odds
> 1 Exposure increases disease
< 1 Exposure decreases disease
Relative Risk (RR)
Used in Cohort Studies
Risk of Developing Disease
a / (a + b)
Divided by /
c / (c + d)
When Low Prevalence Odds Ratio Approximates Relative Risk
Attributable Risk (AR)
Proportion Exposure Increases Disease
Incidence of Diseased (Sick)
a / (a + b)
c / (c + d)
Quantifying Risk: Contingency 2x2 Table Setup
Along Top (x axis)
Along Side (y axis)
A: Exposed and Diseased (Sick)
B: Exposed and Healthy
C: Not Exposed and Diseased (Sick)
D: Not Exposed and Healthy
Common Statistical Tests
Determine If Comparing Numerical Or Categorical 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
Chi-Squared Test For Comparing Categorical Outcomes In Large Sample Sizes
Fisher's Exact Test For Comparing Categorical Outcomes In Small Sample Sizes
Ace Your Medical (MD/DO) Classes & Exams with Picmonic:
Over 1,020,000 students use Picmonic’s picture mnemonics to improve knowledge, retention, and exam performance.
Choose the #1 Medical (MD/DO) student study app.
Picmonic for Medical (MD/DO) covers information that is relevant to your entire Medical (MD/DO) education. Whether you’re studying for your classes or getting ready to conquer the USMLE Step 1, USMLE Step 2 CK, COMLEX Level 1, or COMLEX Level 2, we’re here to help.
Works better than traditional Medical (MD/DO) flashcards.
Research shows that students who use Picmonic see a 331% improvement in memory retention and a 50% improvement in test scores.