USMLE STEP 1 Biostatistics/Epidemiology Questions and Answers with Complete Solutions 2024
USMLE STEP 1 Biostatistics/Epidemiology Questions and Answers with Complete Solutions 2024 Sensitivity - ANSTP / (TP + FN) Specificity - ANSTN / (TN + TP) Positive Predictive Value - ANSTP / (TP + FP) Negative Predictive Value - ANSTN / (FN + TN) Incidence Rate - ANS# of new cases in a certain time period / population that is at risk during that time period This looks at new incidences occurring during a time period Prevalence - ANS# of existing cases / population at risk Looks at ALL current cases Odds Ratio - ANS(a/c) / (b/d) OR ad / bc Relative Risk - ANS[a / (a + b)] / [c / (c + d)] Attributable Risk - ANS(a / (a+b) ) - (c / (c+d) ) Gaussian curve standard deviation %'s - ANS+/- 1 SD = 68% +/- 2 SD = 95%
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usmle step 1 biostatisticsepidemiology questions
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